{"id":892,"date":"2010-01-29T00:58:50","date_gmt":"2010-01-28T16:58:50","guid":{"rendered":"http:\/\/www.ccttours.com\/blog\/?p=892"},"modified":"2010-01-31T12:39:36","modified_gmt":"2010-01-31T04:39:36","slug":"processing%ef%bc%9a%e6%95%b0%e6%8d%ae%e8%be%93%e5%85%a5%ef%bc%88%e4%b8%8a%ef%bc%89","status":"publish","type":"post","link":"https:\/\/learn.travelchinawith.me\/?p=892","title":{"rendered":"Processing\uff1a\u6570\u636e\u8f93\u5165\uff08\u4e0a\uff09"},"content":{"rendered":"<p>1. \u65b9\u6cd5<em>indexOf()<\/em>\u8fd4\u56de\u4e00\u4e2a\u5173\u952e\u5b57\uff08\u6216\u8bcd\uff09\u5728\u5b57\u7b26\u4e32\u4e2d\u7684\u4f4d\u7f6e\uff0c\u5b83\u6709\u4e00\u4e2a\u5f15\u6570\uff1a\u5173\u952e\u5b57\u3002\u4f8b\u5982\u4e0b\u4f8b\u5c06\u8fd4\u56de\u6570\u503c3:<\/p>\n<pre class=\"brush:processing\">String search = \"def\";  \r\nString toBeSearched = \"abcdefghi\"; \r\nint index = toBeSearched.indexOf(search);<\/pre>\n<p>2. \u9010\u4e00<em>println()<\/em>\u4e00\u4e0b\u4e0b\u8fb9\u8bf8\u4f8b\uff0c\u6570\u4e00\u6570\uff08\u8bb0\u4f4f\u4e00\u4e2a\u5b57\u7b26\u4e32\u7684\u7b2c\u4e00\u4f4d\u662f0\u800c\u4e0d\u662f1\uff0c\u56e0\u4e3a\u4ed6\u662f\u4e00\u4e2a\u6570\u7ec4\uff0c\u6240\u4ee5\u4f60\u5e94\u5f53\u4ece0\u6570\u8d77\uff09\uff0c\u4f60\u4fbf\u4f1a\u4e86\u89e3\u5b83\u7684\u7528\u6cd5\uff1a<\/p>\n<pre class=\"brush:processing\">String sentence = \"The quick brown fox jumps over the lazy dog.\" ;  \r\nprintln(sentence.indexOf(\"quick\"));  \r\nprintln(sentence.indexOf(\"fo\"));  \r\nprintln(sentence.indexOf(\"The\"));  \r\nprintln(sentence.indexOf(\"blah blah\"));<\/pre>\n<p>3. \u662f\u7684\uff0c\u8bd5\u5230\u4e0a\u8fb9\u6700\u540e\u4e00\u4e2a\u4f8b\u5b50\u7684\u65f6\u5019\uff0c\u4f60\u4f1a\u53d1\u73b0\u5b83\u8fd4\u56de\u7684\u503c\u662f-1\u3002\u8fd9\u662f\u4e00\u4e2a\u5f88\u597d\u7684\u9009\u62e9\uff0c\u56e0\u4e3a\u5728\u6570\u7ec4\u5e8f\u53f7\u4e2d\u4e0d\u5b58\u5728-1\uff0c\u56e0\u6b64\uff0c\u5f53<em>indexOf(<\/em>)\u627e\u4e0d\u5230\u4e00\u4e2a\u5173\u952e\u5b57\u7684\u65f6\u5019\uff0c\u8fd4\u56de\u503c-1\u6765\u8868\u8ff0\u662f\u518d\u5408\u9002\u4e0d\u8fc7\u7684\u3002<\/p>\n<p>4. \u4e00\u4e2a\u5b57\u7b26\u4e32\u7684\u4e00\u90e8\u5206\u88ab\u79f0\u4e3a\u5b50\u4e32(substring)\uff0c\u4e00\u4e2a\u5b50\u4e32\u53ef\u4ee5\u85c9\u7531<em>substring()<\/em>\u51fd\u6570\u5f97\u5230\u3002\u5b83\u6709\u4e24\u4e2a\u5f15\u6570\uff1a\u5f00\u59cb\u548c\u7ed3\u675f\u7684\u4f4d\u7f6e\u3002\u6bd4\u5982\u4e0b\u4f8b\u7684\u7ed3\u679c\u4e3a\u201cdef\u201d\uff1a<\/p>\n<pre class=\"brush:processing\">String alphabet = \"abcdefghi\" ;   \r\nString sub = alphabet.substring(3,6);<\/pre>\n<p>5. \u901a\u8fc7\u4e0a\u4f8b\u6211\u4eec\u53d1\u73b0\uff0c\u5b50\u4e32\u5f00\u59cb\u4e8e\u7ed9\u5b9a\u7684\u5f00\u59cb\u4f4d\u7f6e\uff083\uff09\uff0c\u5374\u7ed3\u675f\u4e8e\u7ed9\u5b9a\u7684\u7ed3\u675f\u4f4d\u7f6e\u51cf\u4e00\uff086\uff09\u3002\u51cf\u4e00\u7684\u597d\u5904\u662f\uff0c\u5982\u679c\u4f60\u9700\u8981\u7684\u5b50\u4e32\u7ed3\u675f\u4e8e\u5b57\u7b26\u4e32\u672b\u5c3e\uff0c\u4f60\u53ef\u4ee5\u65b9\u4fbf\u7684\u4f7f\u7528<em>thestring.length()<\/em>\uff0c\u540c\u65f6\uff0c\u4f60\u53ef\u4ee5\u7528\u7ed3\u675f\u4f4d\u7f6e\u51cf\u53bb\u8d77\u59cb\u4f4d\u7f6e\u6765\u7b80\u5355\u7684\u8ba1\u7b97\u5b50\u4e32\u7684\u957f\u5ea6\u3002<\/p>\n<p>6. \u4f60\u53ef\u4ee5\u8fd9\u6837\u4ece\u6574\u4e2a\u5b57\u7b26\u4e32\u4e2d\u83b7\u53d6\u5230&#8221;quick brown fox jumps over the lazy dog&#8221;\uff1a<\/p>\n<pre class=\"brush:processing\">String sentence = \"The quick brown fox jumps over the lazy dog.\"; \r\nint foxIndex=sentence.indexOf(\"fox jumps over the lazy dog\");  \r\nint periodIndex = sentence.indexOf(\".\");  \r\nprintln(sentence.substring(foxIndex,periodIndex));<\/pre>\n<p>\u5f53\u7136\uff0c\u5982\u679c\u4f60\u613f\u610f\u6570\u7684\u8bdd\uff0c\u4f60\u4e5f\u53ef\u4ee5\u8fd9\u6837\u5199\uff1a<\/p>\n<pre class=\"brush:processing\">String sentence = \"The quick brown fox jumps over the lazy dog.\";  \r\nprintln(sentence.substring(16,(sentence.length()-1)));<\/pre>\n<p>\u7b2c\u4e8c\u4e2a\u65b9\u5f0f\uff0c\u867d\u7136\u73b0\u5728\u770b\u8d77\u6765\u6bd4\u7b2c\u4e00\u79cd\u5199\u5f97\u66f4\u5c11\uff0c\u4f46\u662f\u8bbe\u60f3\u4e00\u4e0b\u5982\u679c\u8981\u5728\u4e00\u7bc7\u6587\u7ae0\u4e2d\u622a\u53d6\u67d0\u4e2a\u90e8\u5206\u7684\u8bdd\uff0c\u786c\u6570\u8fd8\u4e0d\u6570\u6b7b\u4f60\uff1f\uff01<\/p>\n<p>7. \u4e0b\u4f8b\u5b9e\u73b0\u4e86\u7528\u6237\u952e\u76d8\u8f93\u5165\u5f55\u5165\uff1a<\/p>\n<pre class=\"brush:processing\">PFont f;\r\n\r\n\/\/ \u4fdd\u5b58\u8f93\u5165\u6587\u5b57\u7684\u53d8\u91cf\r\nString typing = \"\";\r\n\r\n\/\/ \u4fdd\u5b58\u56de\u8f66\u540e\u4fdd\u5b58\u6587\u5b57\u7684\u53d8\u91cf\r\nString saved = \"\";\r\n\r\nvoid setup() {\r\n  size(300,200);\r\n  f = createFont(\"Arial\",16,true);\r\n}\r\n\r\nvoid draw() {\r\n  background(255);\r\n  int indent = 25;\r\n  \r\n  \/\/ \u8bbe\u7f6e\u5b57\u4f53\u548c\u6587\u672c\u989c\u8272\r\n  textFont(f);\r\n  fill(0);\r\n  \r\n  \/\/ \u663e\u793a\u4e00\u5207\r\n  text(\"\u70b9\u51fb\u8fd9\u4e2a\u5c0f\u7a0b\u5e8f\u5e76\u7528\u952e\u76d8\u8f93\u5165\u3002\\n\u6572\u56de\u8f66\u4fdd\u5b58\u4f60\u7684\u8f93\u5165\u3002\", indent, 40);\r\n  text(typing,indent,90);\r\n  text(saved,indent,130);\r\n}\r\n\r\nvoid keyPressed() {\r\n  \/\/ \u5982\u679c\u56de\u8f66\u952e\u6309\u4e0b, \u4fdd\u5b58\u5e76\u6e05\u9664\u5b57\u7b26\u4e32\r\n  if (key == '\\n' ) {\r\n    saved = typing;\r\n    \/\/ \u53ef\u4ee5\u901a\u8fc7\u5c06\u4e00\u4e2a\u5b57\u7b26\u4e32\u8bbe\u7f6e\u7b49\u4e8e\"\"\u5b9e\u73b0\u5c06\u5176\u6e05\u9664\r\n    typing = \"\"; \r\n  } else {\r\n    \/\/ \u5426\u5219\uff0c\u4e32\u8054\u5b57\u7b26\u4e32\r\n    \/\/ \u7528\u6237\u8f93\u5165\u7684\u6bcf\u4e2a\u5b57\u7b26\u90fd\u88ab\u52a0\u5230String\u53d8\u91cf\u4e4b\u540e.\r\n    typing = typing + key; \r\n  }\r\n}<\/pre>\n<p>8. p5\u63d0\u4f9b\u4e86\u5176\u4ed6\u5173\u4e8e\u5b57\u7b26\u4e32\u7ec4\u5408\u53ca\u62c6\u5206\u7684\u51fd\u6570\uff1a<em>split()<\/em>\u548c<em>join()<\/em>\u3002\u987e\u540d\u601d\u4e49\uff0c<em>split()<\/em>\u7528\u6765\u5c06\u4e00\u4e2a\u957f\u5b57\u7b26\u4e32\u62c6\u89e3\u4e3a\u4e00\u4e2a\u5b57\u7b26\u4e32\u6570\u7ec4\uff0c\u5b83\u6709\u4e24\u4e2a\u5f15\u6570\uff1a\u5c06\u88ab\u62c6\u89e3\u7684\u5b57\u7b26\u4e32\u548c\u5206\u754c\u7b26(delimiter)\uff1a<\/p>\n<pre class=\"brush:processing\">\/\/ \u7528\u7a7a\u683c\u4f5c\u4e3a\u754c\u5b9a\u7b26\u62c6\u5206\u4e00\u4e2a\u5b57\u7b26\u4e32 \r\nString spaceswords = \"oNEwAY is a Post Rock band from Kunming.\" ;   \r\nString[] list = split(spaceswords, \" \");   \r\nfor (int i = 0; i < list.length; i++) {   \r\n  println(list[i] + \" \" + i);      \r\n}<\/pre>\n<p>\u6216\u8005\u7528\u9017\u53f7\u4f5c\u4e3a\u754c\u5b9a\u7b26\uff1a<\/p>\n<pre class=\"brush:processing\">\/\/ \u7528\u9017\u53f7\u4f5c\u4e3a\u754c\u5b9a\u7b26\u62c6\u5206\u4e00\u4e2a\u5b57\u7b26\u4e32    \r\nString commaswords = \"oNEwAY,is,a,Post,Rock,band,from,Kunming.\" ;   \r\nString[] list = split (commaswords, ',');\r\nfor (int i = 0; i < list.length; i++) {   \r\n  println(list[i] + \" \" + i);      \r\n}<\/pre>\n<p>\u4e8c\u8005\u8fd0\u884c\u540e\u5728\u4fe1\u606f\u7a97\u53e3\u5747\u8fd4\u56de\u7ed3\u679c\uff1a<br \/>\n<code>oNEwAY 0<br \/>\nis 1<br \/>\na 2<br \/>\nPost 3<br \/>\nRock 4<br \/>\nband 5<br \/>\nfrom 6<br \/>\nKunming. 7<\/code><\/p>\n<p>9. \u5982\u679c\u8981\u4f7f\u7528\u591a\u4e8e\u4e24\u4e2a\u5206\u754c\u7b26\uff0c\u4f60\u9700\u8981\u4f7f\u7528<em>splitTokens(<\/em>)\u51fd\u6570\uff0c\u5b83\u4e0e<em>split()<\/em>\u7684\u7528\u6cd5\u57fa\u672c\u4e00\u81f4\uff0c\u9664\u4e86\u4e00\u70b9\u533a\u522b\uff1a\u5b57\u7b26\u4e32\u4e2d\u7684\u4efb\u4f55\u5143\u7d20\u90fd\u6709\u4f5c\u4e3a\u4e00\u4e2a\u754c\u5b9a\u7b26\u7684\u673a\u4f1a\uff1a<\/p>\n<pre class=\"brush:processing\">\/\/ \u591a\u5206\u754c\u7b26\u62c6\u5206\u5b57\u7b26\u4e32 \r\nString stuff = \"hats  &  apples, cars + phones % elephants dog.\";   \r\nString[] list = splitTokens(stuff, \"& , + .\");   \r\nfor (int i = 0; i < list.length; i++) {   \r\n  println(list[i] +  \" \" + i);      \r\n}<\/pre>\n<p>\u8fd0\u884c\u540e\u4fe1\u606f\u7a97\u53e3\u8fd4\u56de\u7ed3\u679c\uff1a<br \/>\n<code>hats 0<br \/>\napples 1<br \/>\ncars 2<br \/>\nphones 3<br \/>\n% 4<br \/>\nelephants 5<br \/>\ndog 6<\/code><br \/>\n\u7531\u6b64\u53ef\u89c1\uff0c\u4f5c\u4e3a\u754c\u5b9a\u7b26\u7684\u5143\u7d20\u5c06\u4e0d\u4f1a\u51fa\u73b0\u5728\u6570\u7ec4\u4e2d\u3002<\/p>\n<p>10. \u5982\u679c\u4f60\u8981\u62c6\u5206\u4e00\u4e2a\u5b57\u7b26\u4e32\u4e2d\u7684\u6570\u5b57\uff0c\u53ef\u7528<em>int()<\/em>\u51fd\u6570\u5c06\u7ed3\u679c\u6570\u7ec4\u8f6c\u5316\u4e3a\u4e00\u4e2a\u6574\u6570\u6570\u7ec4\uff1a<\/p>\n<pre class=\"brush:processing\">\/\/ \u8ba1\u7b97\u5b57\u7b26\u4e32\u5185\u5404\u6570\u5b57\u4e4b\u548c \r\nString numbers = \"8,67,5,309\";   \r\n\/\/ \u8f6c\u5316\u5b57\u7b26\u4e32\u6570\u7ec4\u4e3a\u6574\u6570\u6570\u7ec4\r\n\/\/ \u5b57\u7b26\u4e32\u4e2d\u7684\u6570\u5b57\u5e76\u975e\u6570\u5b57\u5e76\u4e0d\u53ef\u7528\u4e8e\u6570\u5b66\u8ba1\u7b97\uff0c\u9664\u975e\u4e8b\u5148\u5c06\u5b83\u4eec\u8f6c\u4e3a\u6570\u5b57\u7c7b\u578b\r\nint[] list = int(split(numbers, ','));   \r\nint sum = 0;   \r\nfor (int i = 0; i < list.length; i++) {   \r\n  sum = sum + list[i];      \r\n}\r\nprintln(sum);<\/pre>\n<p>11. <em>join()<\/em>\u7684\u8fc7\u7a0b\u4e0e<em>split()<\/em>\u6b63\u76f8\u53cd\uff0c\u5b83\u662f\u5c06\u4e00\u4e2a\u5b57\u7b26\u4e32\u6570\u7ec4\u6574\u5408\u4e3a\u4e00\u4e2a\u957f\u5b57\u7b26\u4e32\u3002\u540c\u6837\u662f\u4e24\u4e2a\u5f15\u6570\uff1a\u6b32\u7ed3\u5408\u6570\u7ec4\uff0c\u5206\u9694\u7b26\u3002<br \/>\n\u5047\u8bbe\u8fd9\u6837\u4e00\u4e2a\u6570\u7ec4\uff1a<\/p>\n<pre class=\"brush:processing\">String[] lines = {\"It\",\"was\",\"a\",\"dark\",\"and\",\"stormy\",\"night.\"};<\/pre>\n<p>\u7528\u201c\uff0b\u201d\u548cfor\u5faa\u73af\uff0c\u6211\u4eec\u53ef\u4ee5\u8fd9\u6837\u8fde\u63a5\u5b83\u4eec\uff1a<\/p>\n<pre class=\"brush:processing\">\/\/ \u624b\u5de5\u8fde\u63a5 \r\nString onelongstring = \" \";  \r\nfor (int i = 0; i < lines.length; i++) {  \r\n  onelongstring = onelongstring + lines[i] + \" \";     \r\n} <\/pre>\n<p>\u4f7f\u7528<em>join()<\/em>\uff0c\u4e00\u5207\u5f97\u5230\u6700\u5927\u7b80\u5316\uff1a<\/p>\n<pre class=\"brush:processing\">String onelongstring = join (lines, \" \");<\/pre>\n<p>12. p5\u53ef\u4ee5\u8bfb\u53d6\u4e00\u4e2a\u5916\u90e8txt\u6863\uff1a<\/p>\n<pre class=\"brush:processing\">String[] lines = loadStrings(\"text.txt\");   \r\nprintln (\"there are \" + lines.length + \" lines\");\r\nfor (int i = 0; i < lines.length; i++){   \r\n  println(lines[i]);      \r\n}<\/pre>\n<p>\u662f\u7684\uff0c\u4ecd\u7136\uff0c\u4f5c\u4e3a\u5e38\u8bc6\uff0c\u4f60\u9700\u8981\u5c06text.txt\u6587\u4ef6\u653e\u5165\u8fd9\u4e2asketch\u4e0b\u7684data\u6587\u4ef6\u5939\u5185\u3002<\/p>\n<p>13. \u4e0b\u4f8b\u4e3a\u4e00\u4e2a\u53ef\u89c6\u5316\u6548\u679c\u7684\u521d\u7ea7\u4f8b\u5b50\uff0c\u5c06data.txt\u4e2d\u7684\u6570\u636e\u8f6c\u5316\u4e3a\u67f1\u72b6\u56fe\u663e\u793a\uff1a<br \/>\n13.1. \u521b\u5efa\u5e76\u4fdd\u5b58data.txt\uff0c\u5185\u5bb9\uff08\u5f53\u7136\uff0c\u4f60\u53ef\u4ee5\u968f\u4fbf\u5199\uff09\uff1a131,85,87,16,169,140,153,72,113,123<br \/>\n13.2. \u7528p5\u8fd0\u884c\u5982\u4e0b\u4ee3\u7801\uff1a<\/p>\n<pre class=\"brush:processing\">int[] data;\r\n\r\nvoid setup() {\r\n  size(200,200);\r\n \/\/ \u6587\u4ef6\u4e2d\u7684\u6587\u5b57\u88ab\u8f7d\u5165\u4e00\u4e2a\u6570\u7ec4. \r\n  String[] stuff = loadStrings(\"data.txt\");\r\n  \/\/ \u8fd9\u4e2a\u6570\u7ec4\u53ea\u6709\u4e00\u4e2a\u5143\u7d20\u56e0\u4e3a\u5b83\u53ea\u6709\u4e00\u884c. \r\n  \/\/ \u7528\u9017\u53f7\u4f5c\u4e3a\u5206\u754c\u7b26\uff0c\u5e76\u5c06\u6570\u7ec4\u8f6c\u5316\u4e3a\u6574\u6570\u6570\u7ec4\r\n  data = int(split(stuff[0], ',' ));\r\n}\r\n\r\nvoid draw() {\r\n  background(255);\r\n  stroke(0);\r\n  \r\n  for (int i = 0; i < data.length; i ++ ) {\r\n    \/\/ \u6570\u7ec4\u5143\u7d20\u88ab\u7528\u4e8e\u8bbe\u7f6e\u77e9\u5f62\u7684\u989c\u8272\u548c\u9ad8\u5ea6.\r\n    fill(data[i]); \r\n    rect(i*20,0,20,data[i]);\r\n  }\r\n  noLoop();\r\n}<\/pre>\n<p>14. \u7ee7\u7eed\u4e00\u4e2a\u7a0d\u5fae\u9ad8\u7ea7\u7684\u4f8b\u5b50\uff0c\u5c06\u6587\u672c\u6587\u4ef6\u5185\u7684\u6570\u636e\u4f20\u5165\u4e00\u4e2a\u5bf9\u8c61\u7684\u6784\u9020\u5668\uff1a<\/p>\n<pre class=\"brush:processing\">Bubble[] bubbles;\r\n\r\nvoid setup() {\r\n  size(200,200);\r\n  smooth();\r\n  \r\n  \/\/ \u4ee5\u5b57\u7b26\u4e32\u6570\u7ec4\u7684\u65b9\u5f0f\u8f7d\u5165\u6587\u672c\u6587\u4ef6\r\n  String[] data = loadStrings(\"data.txt\");\r\n  \r\n  \/\/ \u6c14\u6ce1\u5bf9\u8c61\u6570\u7ec4\u7684\u5927\u5c0f\u7531\u6587\u672c\u6587\u4ef6\u4e2d\u603b\u7684\u884c\u6570\u51b3\u5b9a\r\n  bubbles = new Bubble[data.length]; \r\n  for (int i = 0; i < bubbles.length; i ++ ) {\r\n    \/\/ \u6bcf\u884c\u90fd\u88ab\u62c6\u5206\u4e3a\u4e00\u4e2a\u5c0f\u6570\u6570\u7ec4.\r\n    float[] values = float(split(data[i], \",\" )); \r\n    \/\/ \u6570\u7ec4\u4e2d\u7684\u503c\u88ab\u4f20\u9012\u5165\u6c14\u6ce1\u7c7b\u7684\u6784\u9020\u5668.\r\n    bubbles[i] = new Bubble(values[0],values[1],values[2]); \r\n  }\r\n}\r\n\r\nvoid draw() {\r\n  background(255);\r\n  \r\n  \/\/ \u663e\u793a\u5e76\u79fb\u52a8\u6240\u6709\u6c14\u6ce1\r\n  for (int i = 0; i < bubbles.length; i ++ ) {\r\n    bubbles[i].display();\r\n    bubbles[i].drift();\r\n  }\r\n}\r\n\r\nclass Bubble {\r\n  float x,y;\r\n  float diameter;\r\n  float speed;\r\n  float r,g;\r\n\r\n  \/\/ \u6784\u9020\u5668\u521d\u59cb\u5316\u989c\u8272\u548c\u5927\u5c0f\r\n  \/\/ \u968f\u673a\u51b3\u5b9a\u4f4d\u7f6e\r\n  Bubble(float r_, float g_, float diameter_) {\r\n    x = random(width);\r\n    y = height;\r\n    r = r_;\r\n    g = g_;\r\n    diameter = diameter_;\r\n  }\r\n\r\n  \/\/ \u663e\u793a\u6c14\u6ce1\r\n  void display() {\r\n    stroke(0);\r\n    fill(r,g,255,150);\r\n    ellipse(x,y,diameter,diameter);\r\n  }\r\n\r\n  \/\/ \u79fb\u52a8\u6c14\u6ce1\r\n  void drift() {\r\n    y += random(-3,-0.1);\r\n    x += random(-1,1);\r\n    if (y < -diameter*2) {\r\n      y = height + diameter*2;\r\n    }\r\n  }\r\n}<\/pre>\n<p>\u4e0a\u4f8b\u4e2ddata.txt\u5185\u7684\u5185\u5bb9\u4e3a\uff08\u5f53\u7136\uff0c\u4f60\u53ef\u4ee5\u968f\u4fbf\u5199\uff09\uff1a<br \/>\n<code>88,149,22<br \/>\n193,78,8<br \/>\n90,152,56<br \/>\n136,18,37<br \/>\n47,2,55<br \/>\n36,142,57<br \/>\n10,61,31<br \/>\n9,121,49<br \/>\n156,60,12<br \/>\n71,200,21<\/code><\/p>\n<p>15. \u73b0\u5728\u6211\u4eec\u5df2\u7ecf\u5b66\u4f1a\u8212\u670d\u7684\u8f7d\u5165\u4fe1\u606f\uff0c\u7136\u540e\u51c6\u5907\u95ee\u63a5\u4e0b\u6765\u7684\u8fd9\u4e2a\u95ee\u9898\uff1a\u6211\u4eec\u8be5\u5982\u4f55\u5b58\u50a8\u4fe1\u606f\u7136\u540e\u5728\u4e0b\u4e00\u6b21\u7a0b\u5e8f\u8fd0\u884c\u7684\u65f6\u5019\u8f7d\u5165\u65b0\u4fe1\u606f\uff1f\u6bd4\u5982\u8bf4\uff0c\u8ba9\u4e0a\u4f8b\u7684\u6c14\u6ce1\u4eec\u5f53\u9f20\u6807\u5728\u5176\u4e0a\u6eda\u52a8\u7684\u65f6\u5019\u53d8\u5316\u3002<\/p>\n<pre class=\"brush:processing\">\/\/ Bubble\u7c7b\u4e2drollover()\u51fd\u6570\u4f9d\u636e\u5f15\u6570\uff08mx, my\uff09\u662f\u5426\u4f4d\u4e8e\u6c14\u6ce1\u5185\u8fd4\u56de\u4e00\u4e2a\u5e03\u5c14\u503c\uff08\u771f\u6216\u5047\uff09\r\nboolean rollover(int mx, int my) {   \r\n  if (dist(mx,my,x,y) < diameter\/2) {   \r\n    return true;      \r\n  } else {   \r\n    return false;      \r\n  }       \r\n}<\/pre>\n<p>\u6211\u4eec\u5c06\u9f20\u6807\u4f4d\u7f6e\uff08mx, my\uff09\u5230\u6c14\u6ce1\u5706\u5fc3\u7684\u8ddd\u79bb\u4e0e\u6c14\u6ce1\u534a\u5f84\u7684\u8ddd\u79bb\u4f5c\u6bd4\u8f83\uff0c\u4fbf\u53ef\u4ee5\u786e\u5b9a\u9f20\u6807\u662f\u5426\u4f4d\u4e8e\u5706\u5185\u3002<\/p>\n<figure id=\"attachment_893\" aria-describedby=\"caption-attachment-893\" style=\"width: 419px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/learn.travelchinawith.me\/wp-content\/uploads\/2010\/01\/Picture-1.gif\" alt=\"\u68c0\u67e5\u9f20\u6807\u662f\u5426\u4f4d\u4e8e\u6c14\u6ce1\u5185\" title=\"\u68c0\u67e5\u9f20\u6807\u662f\u5426\u4f4d\u4e8e\u6c14\u6ce1\u5185\" width=\"419\" height=\"203\" class=\"size-full wp-image-893\" \/><figcaption id=\"caption-attachment-893\" class=\"wp-caption-text\">\u68c0\u67e5\u9f20\u6807\u662f\u5426\u4f4d\u4e8e\u6c14\u6ce1\u5185<\/figcaption><\/figure>\n<pre class=\"brush:processing\">for (int i = 0; i < bubbles.length; i++) {  \r\n  bubbles[i].display(); \r\n  bubbles[i].drift(); \r\n  if (bubbles[i].rollover(mouseX,mouseY)) {  \r\n    bubbles[i].change(); \r\n  }       \r\n}<\/pre>\n<p>\u4e00\u65e6\u6211\u4eec\u6267\u884c<em>change()<\/em>\u51fd\u6570\u4ee5\u8c03\u6574Bubble\u7684\u53d8\u91cf\uff0c\u6211\u4eec\u4fbf\u53ef\u4ee5\u4f7f\u7528p5\u7684<em>saveStrings()<\/em>\u51fd\u6570\u5c06\u65b0\u4fe1\u606f\u5b58\u50a8\u5230\u4e00\u4e2a\u6587\u672c\u6587\u4ef6\u4e2d\u3002<em>saveStrings()<\/em>\u51fd\u6570\u4ece\u672c\u8d28\u4e0a\u4e0e<em>loadStrings()<\/em>\u76f8\u53cd\uff0c\u5b83\u63a5\u53d7\u4e00\u4e2a\u6587\u4ef6\u540d\u548c\u4e00\u4e2a\u5b57\u7b26\u4e32\u6570\u7ec4\u5e76\u4e14\u5c06\u90a3\u4e2a\u6570\u7ec4\u4fdd\u5b58\u5230\u6587\u4ef6\u4e2d\u3002<\/p>\n<pre class=\"brush:processing\">String[] stuff = {\"Each String\", \"will be saved\", \"on a\", \"separate line\"};  \r\nsaveStrings(\"data.txt\", stuff);<\/pre>\n<p>\u4fdd\u5b58\u5e76\u8fd0\u884c\u4e0a\u8fb9\u8fd9\u6bb5\u4ee3\u7801\uff0c\u5c06\u5728\u4f60\u7684\u6587\u4ef6\u5939\u6839\u76ee\u5f55\u5185\uff08\u6ce8\u610f\u4e0d\u662fdata\u6587\u4ef6\u5939\uff09\u521b\u5efa\u5982\u4e0btxt\u6587\u6863\u3002<br \/>\n<figure id=\"attachment_897\" aria-describedby=\"caption-attachment-897\" style=\"width: 154px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/learn.travelchinawith.me\/wp-content\/uploads\/2010\/01\/Picture-2.gif\" alt=\"data.txt\" title=\"data.txt\" width=\"154\" height=\"107\" class=\"size-full wp-image-897\" \/><figcaption id=\"caption-attachment-897\" class=\"wp-caption-text\">data.txt<\/figcaption><\/figure><br \/>\n\u5982\u679c\u4f60\u60f3\u8981\u5c06\u6b64\u6587\u4ef6\u5199\u5165data\u6587\u4ef6\u5939\uff0c\u90a3\u4e48\u4f60\u9700\u8981\u6307\u5b9a\u8def\u5f84\u3002\u540c\u6837\uff0c\u5982\u679c\u8be5\u6587\u4ef6\u5df2\u7ecf\u5b58\u5728\uff0c\u5b83\u5c06\u88ab\u91cd\u5199\u3002<\/p>\n<p>16. OK\uff0c\u5177\u5907\u4ee5\u4e0a\u77e5\u8bc6\u4e4b\u540e\uff0c\u6211\u4eec\u4fbf\u53ef\u4ee5\u4e3a\u6c14\u6ce1\u4f8b\u5b50\u6574\u4e00\u4e2a<em>saveData()<\/em>\u51fd\u6570\u6765\u6539\u53d8\"data.txt\"\u4e2d\u7684\u4fe1\u606f\u3002\u5728\u672c\u4f8b\u4e2d\uff0c\u6211\u4eec\u5c06\u5728\u9f20\u6807\u70b9\u51fb\u540e\u5b58\u50a8\u65b0\u7684\u6570\u636e\u3002<\/p>\n<pre class=\"brush:processing\">\/\/ \u4e00\u4e2a\u6c14\u6ce1\u5bf9\u8c61\u7684\u6570\u7ec4\r\nBubble[] bubbles;\r\n\r\nvoid setup() {\r\n  size(200,200);\r\n  smooth();\r\n\r\n  \/\/ \u5c06\u6587\u672c\u6587\u4ef6\u4f5c\u4e3a\u4e00\u4e2a\u5b57\u7b26\u4e32\u6570\u7ec4\u8f7d\u5165\r\n  String[] data = loadStrings(\"data.txt\");\r\n\r\n  \/\/ \u6c14\u6ce1\u5bf9\u8c61\u6570\u7ec4\u7684\u5927\u5c0f\u7531\u6587\u672c\u6587\u4ef6\u4e2d\u603b\u7684\u884c\u6570\u51b3\u5b9a\r\n  bubbles = new Bubble[data.length]; \r\n  for (int i = 0; i < bubbles.length; i ++ ) {\r\n    \/\/ \u6bcf\u884c\u90fd\u88ab\u62c6\u5206\u4e3a\u4e00\u4e2a\u5c0f\u6570\u6570\u7ec4.\r\n    float[] values = float(split(data[i], \",\" )); \r\n    \/\/ \u6570\u7ec4\u4e2d\u7684\u503c\u88ab\u4f20\u9012\u5165\u6c14\u6ce1\u7c7b\u7684\u6784\u9020\u5668.\r\n    bubbles[i] = new Bubble(values[0],values[1],values[2]); \r\n  }\r\n}\r\n\r\nvoid draw() {\r\n  background(255);\r\n\r\n  \/\/ \u663e\u793a\u5e76\u79fb\u52a8\u6240\u6709\u6c14\u6ce1\r\n  for (int i = 0; i < bubbles.length; i ++ ) {\r\n    bubbles[i].display();\r\n    bubbles[i].drift();\r\n\r\n    \/\/ \u5982\u679c\u9f20\u6807\u5728\u6c14\u6ce1\u4e0a\u6eda\u52a8\uff0c\u5219\u6539\u53d8\u6c14\u6ce1\r\n    if (bubbles[i].rollover(mouseX,mouseY)) {\r\n      bubbles[i].change();\r\n    }\r\n  }\r\n}\r\n\r\n\/\/ \u5f53\u9f20\u6807\u6309\u4e0b\u65f6\u4fdd\u5b58\u65b0\u7684\u6c14\u6ce1\u6570\u636e\r\nvoid mousePressed() {\r\n  saveData();\r\n}\r\n\r\nvoid saveData() {\r\n  \/\/ \u5bf9\u6bcf\u4e2a\u6c14\u6ce1\u5b58\u50a8\u4e00\u4e2a\u5b57\u7b26\u4e32\r\n  String[] data = new String[bubbles.length];\r\n\r\n  for (int i = 0; i < bubbles.length; i ++ ) {\r\n    \/\/ \u8fde\u63a5\u6c14\u6ce1\u53d8\u91cf\r\n    data[i] = bubbles[i].r + \" , \" + bubbles[i].g + \" , \" + bubbles[i].diameter;\r\n  }\r\n\r\n  \/\/ \u5b58\u50a8\u5230\u6587\u4ef6\r\n  \/\/ \u6307\u5411data\u6587\u4ef6\u5939\u4f7f\u7528saveStrings()\u91cd\u5199\u540c\u4e00\u4e2a\u6587\u4ef6\r\n  path to saveStrings().\r\n  saveStrings(\"data\/data.txt\", data); \r\n}\r\n\r\n\/\/ Bubble\u7c7b\r\nclass Bubble {\r\n  float x,y;\r\n  float diameter;\r\n  float speed;\r\n  float r,g;\r\n  \r\n  Bubble(float r_,float g_, float diameter_) {\r\n    x = random(width);\r\n    y = height;\r\n    r = r_;\r\n    g = g_;\r\n    diameter = diameter_;\r\n  }\r\n  \r\n  \/\/ \u68c0\u67e5\u9f20\u6807\u662f\u5426\u4f4d\u4e8e\u6c14\u6ce1\u5185\r\n  boolean rollover(int mx, int my) {\r\n    if (dist(mx,my,x,y) < diameter\/2) {\r\n      return true;\r\n    } else {\r\n      return false;\r\n    }\r\n  }\r\n  \r\n  \/\/ \u6539\u53d8\u6c14\u6ce1\u53d8\u91cf\r\n  void change() {\r\n    r = constrain(r + random(-10,10),0,255);\r\n    g = constrain(g + random(-10,10),0,255);\r\n    diameter = constrain(diameter + random(-2,4),4,72);\r\n  }\r\n  \r\n  \/\/ \u663e\u793a\u6c14\u6ce1\r\n  void display() {\r\n    stroke(0);\r\n    fill(r,g,255,150);\r\n    ellipse(x,y,diameter,diameter);\r\n  }\r\n  \r\n  \/\/ \u6c14\u6ce1\u5411\u4e0a\u6f02\u6d41\r\n  void drift() {\r\n    y += random(-3,-0.1);\r\n    x += random(-1,1);\r\n    if (y < -diameter*2) {\r\n      y = height + diameter*2;\r\n    }\r\n  }\r\n}<\/pre>\n<p>17. \u6211\u4eec\u8fd8\u53ef\u4ee5\u4f7f\u7528\u4e00\u4e2a\u7edf\u4e00\u8d44\u6e90\u5b9a\u4f4d\u5668\uff08URL\uff09\u5f53\u4f5cloadStrings()\u7684\u53c2\u6570\uff1a<\/p>\n<pre class=\"brush:processing\">String[] lines = loadStrings(\"http:\/\/www.douban.com\/artist\/oneway\");<\/pre>\n<p>\u8fd0\u884c\u5b83\u7684\u7ed3\u679c\u5c06\u8fd4\u56de\u4f60\u8f93\u5165URL\u9875\u9762\u7684\u6e90\u6587\u4ef6\u3002\u8981\u7ee7\u7eed\u63a5\u4e0b\u6765\u7684\u5b66\u4e60\uff0c\u4f60\u65e0\u987b\u662f\u4e00\u4e2aHTML\u4e13\u5bb6\uff0c\u4f46\u5982\u679c\u4f60\u5b8c\u5168\u4e0d\u719f\u6089HTML\uff0c\u4f60\u53ef\u80fd\u9700\u8981\u9605\u8bfb\uff1a<a href=\"http:\/\/en.wikipedia.org\/wiki\/HTML\">http:\/\/en.wikipedia.org\/wiki\/HTML<\/a>\u3002<\/p>\n<p>18. \u4e0d\u50cf\u4ee5\u9017\u53f7\u5212\u754c\u7684\u6587\u672c\u6587\u4ef6\uff0c\u5c06HTML\u6e90\u6587\u4ef6\u5b58\u5165\u4e00\u4e2a\u5b57\u7b26\u4e32\u6570\u7ec4\u662f\u4e0d\u5b9e\u7528\u7684\uff08\u6bcf\u4e2a\u5143\u7d20\u4ee3\u8868\u6e90\u6587\u4ef6\u4e2d\u7684\u4e00\u884c\uff09\u3002\u5c06\u6570\u7ec4\u8f6c\u5b58\u4e3a\u4e00\u4e2a\u957f\u7684\u5b57\u7b26\u4e32\u53ef\u4ee5\u8ba9\u4e8b\u60c5\u7b80\u5355\u4e00\u4e9b\u3002\u4e4b\u524d\u8bf4\u8fc7\u7684\uff0c\u7528<em>join()<\/em>\u53ef\u4ee5\u505a\u5230\u8fd9\u4e00\u70b9\uff1a<\/p>\n<pre class=\"brush:processing\">String onelongstring = join(lines, \"  \" );<\/pre>\n<p>19. \u5f53\u83b7\u53d6\u5230\u7f51\u9875\u6e90\u6587\u4ef6\u540e\uff0c\u5f88\u591a\u60c5\u51b5\u6211\u4eec\u4ec5\u9700\u8981\u5176\u4e2d\u7684\u4e00\u5c0f\u6bb5\u3002\u4e5f\u8bb8\u662f\u6c14\u8c61\u4fe1\u606f\uff0c\u80a1\u5e02\u884c\u60c5\uff0c\u6216\u8005\u4e00\u4e2a\u65b0\u95fb\u6807\u9898\u3002\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528<em>indexOf()<\/em>, <em>substring()<\/em>, \u548c<em>length()<\/em>\u6765\u4e3a\u6211\u4eec\u4ece\u4e00\u5bf9\u6587\u5b57\u4e2d\u627e\u5230\u6211\u4eec\u9700\u8981\u7684\u6570\u636e\u3002\u7528\u4ee5\u4e0b\u5b57\u7b26\u4e32\u4f5c\u4e3a\u4f8b\u5b50\uff1a<\/p>\n<pre class=\"brush:processing\">String stuff = \"Number of apples:62. Boy, do I like apples or what!\";<\/pre>\n<p>\u6bd4\u5982\u8bf4\u6211\u4eec\u8981\u4ece\u4ee5\u4e0a\u5b57\u7b26\u4e32\u4e2d\u63d0\u53d6\u82f9\u679c\u7684\u6570\u91cf\uff0c\u6211\u4eec\u7684\u7b97\u6cd5\u5e94\u8be5\u5982\u4e0b\uff1a<br \/>\n1\uff09\u627e\u5230\u5b50\u5b57\u7b26\u4e32\u7684\u7ed3\u5c3e\u201capples:\u201d\u3002\u79f0\u5176\u4e3a\u5f00\u59cb\u3002<br \/>\n2\uff09\u627e\u5230 \u201capples:\u201d\u4e4b\u540e\u7684\u7b2c\u4e00\u4e2a\u53e5\u53f7\u3002\u79f0\u5176\u4e3a\u7ed3\u675f\u3002<br \/>\n3\uff09\u5728\u5f00\u59cb\u548c\u7ed3\u675f\u95f4\u521b\u5efa\u4e00\u4e2a\u5b50\u5b57\u7b26\u4e32\u3002<br \/>\n4\uff09\u5c06\u5b57\u7b26\u4e32\u8f6c\u6362\u81f3\u4e00\u4e2a\u6570\u5b57\uff08\u5982\u679c\u6211\u4eec\u5e0c\u671b\u5982\u6b64\u4f7f\u7528\u5b83\uff09<br \/>\n\u5199\u6210\u4ee3\u7801\uff1a<\/p>\n<pre class=\"brush:processing\">\/\/ \u4e00\u4e2a\u5b57\u7b26\u4e32\u7684\u201c\u7ed3\u675f\u70b9\u201d\u53ef\u4ee5\u901a\u8fc7\u641c\u7d22\u90a3\u4e2a\u5b57\u7b26\u4e32\u7684\u7d22\u5f15\u5e76\u52a0\u4e0a\u5176\u957f\u5ea6\uff08\u672c\u4f8b\u4e2d\u201capples:\u201d\u957f\u5ea6\u4e3a7\uff09\u6765\u83b7\u5f97\r\nint start = stuff.indexOf(\"apples:\") + 7;        \/\/ \u7b2c\u4e00\u6b65   \r\nint end = stuff.indexOf(\".\", start);      \/\/ \u7b2c\u4e8c\u6b65   \r\nString apples =  stuff.substring(start,end);        \/\/ \u7b2c\u4e09\u6b65   \r\nint apple_no = int(apples);        \/\/ \u7b2c\u56db\u6b65<\/pre>\n<p>20. \u4ee5\u4e0a\u4ee3\u7801\u5c5e\u4e8e\u5c0f\u806a\u660e\uff0c\u4f46\u6211\u4eec\u5e94\u5f53\u66f4\u8c28\u614e\uff0c\u4ee5\u514d\u56e0\u65e0\u6cd5\u627e\u5230\u5b50\u5b57\u7b26\u4e32\u800c\u4ea7\u751f\u9519\u8bef\u3002\u6211\u4eec\u53ef\u4ee5\u52a0\u5165\u4e00\u4e9b\u67e5\u9519\u7684\u4ee3\u7801\uff0c\u7136\u540e\u5c06\u5b83\u4eec\u505a\u5165\u4e00\u4e2a\u51fd\u6570\uff1a<\/p>\n<pre class=\"brush:processing\">\/\/ \u5728\u4e24\u4e2a\u5b50\u5b57\u7b26\u4e32\u95f4\u8fd4\u56de\u4e00\u4e2a\u5b50\u5b57\u7b26\u4e32\u7684\u51fd\u6570 \r\nString giveMeTextBetween(String s, String startTag, String endTag) {   \r\n  String found = \" \";   \r\n  \/\/ \u627e\u5230\u5f00\u59cb\u6807\u7b7e\u7684\u7d22\u5f15   \r\n  int startIndex = s.indexOf(startTag);   \r\n  \/\/ \u5982\u679c\u6211\u4eec\u4e00\u65e0\u6240\u83b7   \r\n  if (startIndex == \u20131) return \" \";   \r\n  \/\/ \u79fb\u52a8\u5230\u5f00\u59cb\u6807\u7b7e\u7684\u672b\u5c3e   \r\n  startIndex += startTag.length();   \r\n  \/\/ \u627e\u5230\u7ed3\u675f\u6807\u7b7e\u7684\u7d22\u5f15 \r\n  int endIndex = s.indexOf(endTag, startIndex); \r\n  \/\/  \u5982\u679c\u6211\u4eec\u4e00\u65e0\u6240\u83b7 \r\n  if (endIndex == \u20131) return \" \";  \r\n  \/\/ \u8fd4\u56de\u5176\u95f4\u7684\u6587\u5b57 \r\n  return s.substring(startIndex,endIndex); \r\n}<\/pre>\n<p>21. \u7136\u800c\u4e86\u89e3HTML\u7684\u540c\u5b66\u90fd\u8be5\u77e5\u9053\uff0c\u8981\u4ece\u5b83\u91cc\u8fb9\u63d0\u53d6\u51fa\u6709\u7528\u7684\u6570\u636e\u662f\u5982\u6b64\u56f0\u96be\u7684\u4e00\u4ef6\u4e8b\u3002\u5176\u5b9e\u5bf9\u4e8e\u4ece\u7f51\u7ad9\u83b7\u53d6\u6570\u636e\u6765\u8bf4\uff0c\u4e00\u4e2aXML\uff08\u6269\u5c55\u6807\u8bb0\u8bed\u8a00\uff09\u7684feed\u5c06\u66f4\u53ef\u9760\u548c\u6613\u4e8e\u5206\u6790\u3002\u6211\u4eec\u9996\u5148\u4ece\u96c5\u864e\u5929\u6c14\u83b7\u53d6XML feed\uff1a<br \/>\n<a href=\"http:\/\/xml.weather.yahoo.com\/forecastrss?p=CHXX0076&#038;u=c\">http:\/\/xml.weather.yahoo.com\/forecastrss?p=CHXX0076&u=c<\/a><br \/>\n\u5728p5\u4e2d\uff0c\u4ece\u4e00\u4e2aXML feed\u83b7\u53d6\u6570\u636e\u7684\u65b9\u5f0f\u662f\u4f7f\u7528XML\u5e93\u3002\u4f46\u662f\uff0c\u4e3a\u4e86\u4ece\u4e00\u4e2a\u8f83\u4f4e\u7684\u5c42\u9762\u6620\u8bc1\u5b57\u7b26\u4e32\u5206\u6790\uff0c\u4f5c\u4e3a\u4e00\u4e2a\u7ec3\u4e60\uff0c\u6211\u4eec\u5c06\u4f7f\u7528\u6211\u4eec\u7684<em>loadStrings()<\/em>\u624b\u52a8\u5265\u79bb\u63d0\u53d6\u6280\u672f\u3002<\/p>\n<p>22. \u900f\u8fc7\u4e0a\u8fb9\u90a3\u4e2aXML\u7684\u6e90\u4ee3\u7801\uff08\u5efa\u8bae\u7528Mac\u7684\u540c\u5b66\u4f7f\u7528FireFox\u67e5\u770b\uff0cSafari\u65e0\u6cd5\u67e5\u770b\u6216\u6211\u8fd8\u4e0d\u77e5\u9053\u5982\u4f55\u67e5\u770b\uff0c\u56e0\u4e3aSafari\u4f1a\u4e3b\u52a8\u5c06\u8fd9\u4e2a\u94fe\u63a5\u8f6c\u6362\u4e3a\"feed:\/\/\"\u6253\u5934\u7684\uff09\uff0c\u6211\u4eec\u53ef\u4ee5\u770b\u52302010\u5e741\u670828\u65e5\u665a\u4e0a\u5341\u70b9\u6606\u660e\u7684\u6c14\u6e29\u662f11\u6444\u6c0f\u5ea6\uff08\u4e5f\uff5e\u6bd4\u8d77\u4f60\u4eec\u6765\u8bf4\u5f88\u6696\u548c\u5427\uff5e\uff09\u3002<\/p>\n<pre><yweather:condition  text=\"Fair\"  code=\"33\"  temp=\"11\"  date=\"Thu, 28 Jan 2010 10:00 pm CST\" \/><\/pre>\n<p>\u6c14\u6e29\u603b\u5728\u53d8\u5316\u800cXML\u7684\u683c\u5f0f\u4e0d\u4f1a\uff0c\u56e0\u6b64\u6211\u4eec\u53ef\u4ee5\u63a8\u8bba\u6211\u4eec\u641c\u7d22\u7684\u5f00\u59cb\u6807\u7b7e\u5e94\u8be5\u662f\uff1a<\/p>\n<pre class=\"brush:processing\">temp\uff1d\"<\/pre>\n<p>\u7ed3\u675f\u6807\u7b7e\u662f\uff1a<\/p>\n<pre class=\"brush:processing\">\"<\/pre>\n<p>23. \u77e5\u9053\u4e86\u5f00\u59cb\u548c\u7ed3\u675f\u6807\u7b7e\uff0c\u6211\u4eec\u4fbf\u53ef\u4f7f\u7528\u4e0a\u8fb9\u90a3\u4e2a<em>giveMeTextBetween()<\/em>\u6765\u63d0\u53d6\u6e29\u5ea6\u4e86\uff1a<\/p>\n<pre class=\"brush:processing\">String url = \"http:\/\/xml.weather.yahoo.com\/forecastrss?p=CHXX0076&u=c\";   \r\nString[] lines = loadStrings(url);   \r\n\/\/ \u4e3a\u641c\u7d22\u6574\u4e2a\u9875\u9762\u800c\u5904\u7406\u6570\u7ec4   \r\nString xml = join(lines,\" \");   \r\n\/\/ \u641c\u7d22\u6e29\u5ea6   \r\nString tag1 = \"temp = \\\"\";   \r\nString tag2 = \"\\\"\";   \r\ntemp = int(giveMeTextBetween (xml,tag1,tag2));   \r\nprintln(temp);<\/pre>\n<p>\u6ce8\u610f\uff0c\u8981\u5728Java\u4e2d\u663e\u793a\u4e00\u4e2a\u5f15\u53f7\uff0c\u9700\u8981\u5728\u8981\u663e\u793a\u5f15\u53f7\u524d\u52a0\u4e0a\u4e00\u4e2a\u53f3\u659c\u6760\uff1a<\/p>\n<pre class=\"brush:processing\">String q = \"\u8fd9\u4e2a\u5b57\u7b26\u4e32\u6709\u4e00\u4e2a\\\"\u53f7\";<\/pre>\n<p>24. \u4e0b\u4f8b\u4ece\u96c5\u864e\u5929\u6c14XML feed\u4e2d\u68c0\u7d22\u6e29\u5ea6\u5e76\u5c06\u4e4b\u663e\u793a\u4e8e\u8424\u5e55\u4e0a\u3002\u8fd9\u4e2a\u4f8b\u5b50\u540c\u6837\u4f7f\u7528\u4e86\u9762\u5411\u5bf9\u8c61\u7f16\u7a0b\uff0c\u5c06\u6240\u6709\u5b57\u7b26\u4e32\u5206\u6790\u529f\u80fd\u505a\u5165\u4e00\u4e2aWeatherGrabber\u7c7b\uff1a<\/p>\n<pre class=\"brush:processing\">PFont f;\r\nString[] zips = { \"CHXX0076\" , \"21209\" , \"90210\" };\r\nint counter = 0;\r\n\r\n\/\/ WeatherGrabber\u5bf9\u8c61\u4e3a\u6211\u4eec\u670d\u52a1!\r\nWeatherGrabber wg;\r\n\r\nvoid setup() {\r\n  size(200,200);\r\n  \r\n  \/\/ \u521b\u5efa\u4e00\u4e2aWeatherGrabber\u5bf9\u8c61\r\n  wg = new WeatherGrabber(zips[counter]);\r\n  \/\/ \u544a\u8bc9\u5b83\u7533\u8bf7\u5929\u6c14\r\n  wg.requestWeather();\r\n  \r\n  f = createFont( \"Lucida\" ,16,true);\r\n}\r\n\r\nvoid draw() {\r\n  background(255);\r\n  textFont(f);\r\n  fill(0);\r\n  \r\n  \/\/ \u83b7\u53d6\u8981\u663e\u793a\u7684\u503c\r\n  String weather = wg.getWeather();\r\n  int temp = wg.getTemp();\r\n  \r\n  \/\/ \u663e\u793a\u6240\u6709\u6211\u4eec\u60f3\u8981\u663e\u793a\u7684\u4e1c\u897f\r\n  text(zips[counter],10,160);\r\n  text(weather,10,90);\r\n  text(temp,10,40);\r\n  text(\"\u70b9\u51fb\u8f6c\u6362\u57ce\u5e02\u4ee3\u7801. \" ,10,180);\r\n  \r\n  \/\/ \u57fa\u4e8e\u6e29\u5ea6\u753b\u4e00\u4e2a\u5c0f\u6e29\u5ea6\u8ba1\r\n  stroke(0);\r\n  fill(175);\r\n  rect(10,50,temp*6,20);\r\n}\r\n\r\nvoid mousePressed() {\r\n  \/\/ \u589e\u5927\u8ba1\u6570\u5668\u5e76\u83b7\u53d6\u4e0b\u4e00\u57ce\u5e02\u4ee3\u7801\u7684\u6c14\u6e29\r\n  counter = (counter + 1) % zips.length;\r\n  wg.setZip(zips[counter]);\r\n  \/\/ \u6bcf\u5f53\u9f20\u6807\u70b9\u51fb\uff0c\u8fd9\u4e2a\u6570\u636e\u88ab\u4e00\u4e2a\u65b0\u7684\u57ce\u5e02\u4ee3\u7801\u518d\u6b21\u8bf7\u6c42\r\n  wg.requestWeather(); \r\n}\r\n\r\n\/\/ WeatherGrabber\u7c7b\r\nclass WeatherGrabber {\r\n  \r\n  int temperature = 0;\r\n  String weather = \"\";\r\n  String zip;\r\n  \r\n  WeatherGrabber(String tempZip) {\r\n    zip = tempZip;\r\n  }\r\n  \r\n  \/\/ \u8bbe\u7f6e\u4e00\u4e2a\u65b0\u7684\u57ce\u5e02\u4ee3\u7801\r\n  void setZip(String tempZip) {\r\n    zip = tempZip;\r\n  }\r\n  \r\n  \/\/ \u83b7\u53d6\u6e29\u5ea6\r\n  int getTemp() {\r\n    return temperature;\r\n  }\r\n  \r\n  \/\/ \u83b7\u53d6\u5929\u6c14\r\n  String getWeather() {\r\n    return weather;\r\n  }\r\n  \r\n  \/\/ \u521b\u5efa\u5b9e\u9645\u7684XML\u8bf7\u6c42\r\n  void requestWeather() {\r\n    \/\/ \u5c06\u6240\u6709HTML\/XML\u6e90\u4ee3\u7801\u653e\u5165\u4e00\u4e2a\u5b57\u7b26\u4e32\u6570\u7ec4\r\n    \/\/ (\u6bcf\u884c\u662f\u6570\u7ec4\u4e2d\u7684\u4e00\u4e2a\u5143\u7d20)\r\n    String url = \"http:\/\/xml.weather.yahoo.com\/forecastrss?p=\" + zip + \"&u=c\";\r\n    String[] lines = loadStrings(url);\r\n    \r\n    \/\/ \u5c06\u6570\u7ec4\u8f6c\u5165\u4e00\u4e2a\u957f\u7684\u5b57\u7b26\u4e32\r\n    String xml = join(lines, \"\"); \r\n    \r\n    \/\/ \u641c\u7d22\u6c14\u5019\u72b6\u51b5\r\n    String lookfor = \"yweather:condition  text= \\\"\";\r\n    String end = \"\\\"\";\r\n    weather = giveMeTextBetween(xml,lookfor,end);\r\n    \r\n    \/\/ \u641c\u7d22\u6c14\u6e29\r\n    lookfor = \"temp=\\\"\";\r\n    temperature = int(giveMeTextBetween (xml,lookfor,end));\r\n  }\r\n  \r\n  \/\/ \u4e00\u4e2a\u4ece\u4e24\u4e2a\u5b50\u5b57\u7b26\u4e32\u4e4b\u95f4\u8fd4\u56de\u5b50\u5b57\u7b26\u4e32\u7684\u51fd\u6570\r\n  String giveMeTextBetween(String s, String before, String after) {\r\n    String found = \"\";\r\n    int start = s.indexOf(before);    \/\/ \u627e\u5230\u5f00\u59cb\u6807\u7b7e\u7684\u7d22\u5f15\r\n    if (start == - 1) return\"\";       \/\/ \u5982\u679c\u4e00\u65e0\u6240\u83b7\uff0c\u8fd4\u56de\u4e00\u4e2a\u7a7a\u5b57\u7b26\u4e32\r\n    start += before.length();         \/\/ \u79fb\u52a8\u5230\u5f00\u59cb\u6807\u7b7e\u7684\u672b\u5c3e\r\n    int end = s.indexOf(after,start); \/\/ \u627e\u5230\u7ed3\u675f\u6807\u7b7e\u7684\u7d22\u5f15\r\n    if (end == -1) return\"\";          \/\/ \u5982\u679c\u4e00\u65e0\u6240\u83b7\uff0c\u8fd4\u56de\u4e00\u4e2a\u7a7a\u5b57\u7b26\u4e32\r\n    return s.substring(start,end);    \/\/ \u8fd4\u56de\u4e24\u8005\u4e4b\u95f4\u7684\u6587\u672c\r\n  }  \r\n}\r\n<\/pre>\n<p>\u65e0\u9650\u5d29\u6e83\u4e2d\uff0c\u788e\u4e86 T_T<\/p>\n","protected":false},"excerpt":{"rendered":"<p>1. \u65b9\u6cd5indexOf()\u8fd4\u56de\u4e00\u4e2a\u5173\u952e\u5b57\uff08\u6216\u8bcd\uff09\u5728\u5b57\u7b26\u4e32\u4e2d\u7684\u4f4d\u7f6e\uff0c\u5b83\u6709\u4e00\u4e2a\u5f15\u6570\uff1a\u5173\u952e\u5b57\u3002\u4f8b\u5982\u4e0b\u4f8b\u5c06\u8fd4\u56de\u6570\u503c3: String search = &#8220;def&#8221;; String toBeSearched = &#8220;abcdefghi&#8221;; int index = toBeSearched.indexOf(search); 2. \u9010\u4e00println()\u4e00\u4e0b\u4e0b\u8fb9\u8bf8\u4f8b\uff0c\u6570\u4e00\u6570\uff08\u8bb0\u4f4f\u4e00\u4e2a\u5b57\u7b26\u4e32\u7684\u7b2c\u4e00\u4f4d\u662f0\u800c\u4e0d\u662f1\uff0c\u56e0\u4e3a\u4ed6\u662f\u4e00\u4e2a\u6570\u7ec4\uff0c\u6240\u4ee5\u4f60\u5e94\u5f53\u4ece0\u6570\u8d77\uff09\uff0c\u4f60\u4fbf\u4f1a\u4e86\u89e3\u5b83\u7684\u7528\u6cd5\uff1a String sentence = &#8220;The quick brown fox jumps over the lazy dog.&#8221; ; println(sentence.indexOf(&#8220;quick&#8221;)); println(sentence.indexOf(&#8220;fo&#8221;)); println(sentence.indexOf(&#8220;The&#8221;)); println(sentence.indexOf(&#8220;blah blah&#8221;)); 3. \u662f\u7684\uff0c\u8bd5\u5230\u4e0a\u8fb9\u6700\u540e\u4e00\u4e2a\u4f8b\u5b50\u7684\u65f6\u5019\uff0c\u4f60\u4f1a\u53d1\u73b0\u5b83\u8fd4\u56de\u7684\u503c\u662f-1\u3002\u8fd9\u662f\u4e00\u4e2a\u5f88\u597d\u7684\u9009\u62e9\uff0c\u56e0\u4e3a\u5728\u6570\u7ec4\u5e8f\u53f7\u4e2d\u4e0d\u5b58\u5728-1\uff0c\u56e0\u6b64\uff0c\u5f53indexOf()\u627e\u4e0d\u5230\u4e00\u4e2a\u5173\u952e\u5b57\u7684\u65f6\u5019\uff0c\u8fd4\u56de\u503c-1\u6765\u8868\u8ff0\u662f\u518d\u5408\u9002\u4e0d\u8fc7\u7684\u3002 4. \u4e00\u4e2a\u5b57\u7b26\u4e32\u7684\u4e00\u90e8\u5206\u88ab\u79f0\u4e3a\u5b50\u4e32(substring)\uff0c\u4e00\u4e2a\u5b50\u4e32\u53ef\u4ee5\u85c9\u7531substring()\u51fd\u6570\u5f97\u5230\u3002\u5b83\u6709\u4e24\u4e2a\u5f15\u6570\uff1a\u5f00\u59cb\u548c\u7ed3\u675f\u7684\u4f4d\u7f6e\u3002\u6bd4\u5982\u4e0b\u4f8b\u7684\u7ed3\u679c\u4e3a\u201cdef\u201d\uff1a String alphabet = &#8220;abcdefghi&#8221; ; String sub = alphabet.substring(3,6); 5. \u901a\u8fc7\u4e0a\u4f8b\u6211\u4eec\u53d1\u73b0\uff0c\u5b50\u4e32\u5f00\u59cb\u4e8e\u7ed9\u5b9a\u7684\u5f00\u59cb\u4f4d\u7f6e\uff083\uff09\uff0c\u5374\u7ed3\u675f\u4e8e\u7ed9\u5b9a\u7684\u7ed3\u675f\u4f4d\u7f6e\u51cf\u4e00\uff086\uff09\u3002\u51cf\u4e00\u7684\u597d\u5904\u662f\uff0c\u5982\u679c\u4f60\u9700\u8981\u7684\u5b50\u4e32\u7ed3\u675f\u4e8e\u5b57\u7b26\u4e32\u672b\u5c3e\uff0c\u4f60\u53ef\u4ee5\u65b9\u4fbf\u7684\u4f7f\u7528thestring.length()\uff0c\u540c\u65f6\uff0c\u4f60\u53ef\u4ee5\u7528\u7ed3\u675f\u4f4d\u7f6e\u51cf\u53bb\u8d77\u59cb\u4f4d\u7f6e\u6765\u7b80\u5355\u7684\u8ba1\u7b97\u5b50\u4e32\u7684\u957f\u5ea6\u3002 6. \u4f60\u53ef\u4ee5\u8fd9\u6837\u4ece\u6574\u4e2a\u5b57\u7b26\u4e32\u4e2d\u83b7\u53d6\u5230&#8221;quick brown fox jumps over [&hellip;]<\/p>\n","protected":false},"author":4,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[57],"tags":[58],"class_list":["post-892","post","type-post","status-publish","format-standard","hentry","category-processing","tag-processing"],"blocksy_meta":[],"_links":{"self":[{"href":"https:\/\/learn.travelchinawith.me\/index.php?rest_route=\/wp\/v2\/posts\/892","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/learn.travelchinawith.me\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/learn.travelchinawith.me\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/learn.travelchinawith.me\/index.php?rest_route=\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"https:\/\/learn.travelchinawith.me\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=892"}],"version-history":[{"count":21,"href":"https:\/\/learn.travelchinawith.me\/index.php?rest_route=\/wp\/v2\/posts\/892\/revisions"}],"predecessor-version":[{"id":921,"href":"https:\/\/learn.travelchinawith.me\/index.php?rest_route=\/wp\/v2\/posts\/892\/revisions\/921"}],"wp:attachment":[{"href":"https:\/\/learn.travelchinawith.me\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=892"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/learn.travelchinawith.me\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=892"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/learn.travelchinawith.me\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=892"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}