两个S垒起来的字符代码是什么,就是用在课号前的 找出两个字符串中相同的子串，用java语言实现
\u5728ASCII\u7801\u5b57\u7b26\u7f16\u7801\u4e2d,\u4ec0\u4e48\u5b57\u7b26\u65e0\u6cd5\u663e\u793a\u6216\u6253\u5370\u51fa\u67650\u7684\u5b57\u7b26NULL\u8868\u793a\u4ec0\u4e48\u90fd\u4e0d\u505a
000 NULL \u7a7a\uff1b
007 (beep) beep\u58f0\u97f3\uff1b
009 (tab) \u6c34\u5e73\u5236\u8868\u7b26\uff0c\u8fd9\u4e2a\u4e0d\u80fd\u663e\u793a\uff0c\u4f46\u53ef\u4ee5\u8bf4\u80fd\u6253\u5370\uff0c\u60f3\u5f53\u4e0e\u6309\u952e\u76d8\u7684tab\u952e\uff1b
010 (line feed) \u6362\u884c\uff0c\u8fd9\u4e2a\u4e0d\u80fd\u663e\u793a\uff0c\u4f46\u53ef\u4ee5\u8bf4\u80fd\u6253\u5370\uff1b
013 (carriage return) \u56de\u8f66\uff0c\u8fd9\u4e2a\u4e0d\u80fd\u663e\u793a\uff0c\u4f46\u53ef\u4ee5\u8bf4\u80fd\u6253\u5370\uff1b
011 (home) \u5782\u76f4\u5236\u8868\u7b26\uff0c\u8fd9\u4e2a\u4e0d\u80fd\u663e\u793a\uff0c\u4f46\u53ef\u4ee5\u8bf4\u80fd\u6253\u5370\uff1b
012 (form feed) \u6362\u9875\u7b26\u3002
\u6269\u5c55\u8d44\u6599
ASCII\u5b57\u7b26\u96c6\u753195\u4e2a\u53ef\u6253\u5370\u5b57\u7b26\uff080x20-0x7E\uff09\u548c33\u4e2a\u63a7\u5236\u5b57\u7b26\uff080x00-0x1F\uff0c0x7F\uff09\u7ec4\u6210\u3002\u53ef\u6253\u5370\u5b57\u7b26\u7528\u4e8e\u663e\u793a\u5728\u8f93\u51fa\u8bbe\u5907\u4e0a\uff1b
\u4f8b\u5982\uff1a\u8367\u5c4f\u6216\u8005\u6253\u5370\u7eb8\u4e0a\uff0c\u63a7\u5236\u5b57\u7b26\u7528\u4e8e\u5411\u8ba1\u7b97\u673a\u53d1\u51fa\u4e00\u4e9b\u7279\u6b8a\u6307\u4ee4\uff1b
\u4f8b\u5982\uff1a0x07\u4f1a\u8ba9\u8ba1\u7b97\u673a\u53d1\u51fa\u54d4\u7684\u4e00\u58f0\uff0c0x00\u901a\u5e38\u7528\u4e8e\u6307\u793a\u5b57\u7b26\u4e32\u7684\u7ed3\u675f\uff0c0x0D\u548c0x0A\u7528\u4e8e\u6307\u793a\u6253\u5370\u673a\u7684\u6253\u5370\u9488\u5934\u9000\u5230\u884c\u9996\uff08\u56de\u8f66\uff09\u5e76\u79fb\u5230\u4e0b\u4e00\u884c\uff08\u6362\u884c\uff09\u3002
\u9898\u3002\u4f60\u53ef\u4ee5\u5728\u7f51\u4e0a\u4e0b\u66f4\u5168\u5957\u7684\u8bd5\u9898\u7ec3\u4e60\u3002
\u5168\u56fd2008\u5e7410\u6708\u8003\u8bd5Java \u8bed\u8a00\u7a0b\u5e8f\u8bbe\u8ba1\uff08\u4e00\uff09\u8bd5\u9898
\u8bfe\u7a0b\u4ee3\u7801\uff1a04747
\u4e00\u3001\u5355\u9879\u9009\u62e9\u9898\uff08\u672c\u5927\u9898\u517110\u5c0f\u9898\uff0c\u6bcf\u5c0f\u98981\u5206\uff0c\u517110\u5206\uff09
\u5728\u6bcf\u5c0f\u9898\u5217\u51fa\u7684\u56db\u4e2a\u5907\u9009\u9879\u4e2d\u53ea\u6709\u4e00\u4e2a\u662f\u7b26\u5408\u9898\u76ee\u8981\u6c42\u7684\uff0c\u8bf7\u5c06\u5176\u4ee3\u7801\u586b\u5199\u5728\u9898\u540e\u7684\u62ec\u53f7\u5185\u3002\u9519\u9009\u3001\u591a\u9009\u6216\u672a\u9009\u5747\u65e0\u5206\u3002
1\uff0e\u4e0b\u8ff0\u5b57\u7b26\u7ec4\u5408\u4e0d\u80fd\u4f5c\u4e3aJava\u7a0b\u5e8f\u6807\u8bc6\u7b26\u7684\u662f\uff08 \uff09
A\uff0eAa12 B\uff0e\u5927x
C\uff0ey\u5c0f D\uff0e5x
2\uff0e\u4ee5\u4e0b\u7a0b\u5e8f\u4ee3\u7801\u7684\u8f93\u51fa\u7684\u7ed3\u679c\u662f\uff08 \uff09
int x=53;
System. out. println(1.0+x/2);
A\uff0e27.0 B\uff0e27.5
C\uff0e1.026 D\uff0e1.026.5
3\uff0e\u53c2\u7167\u4ee5\u4e0bJava\u4ee3\u7801\uff0c\u4ee5\u4e0b\u56db\u4e2a\u53d9\u8ff0\u4e2d\u6700\u786e\u5207\u7684\u662f\uff08 \uff09
class A{
int x; static int y;
void fac(String s)
}
A\uff0ex\u3001y\u548cs\u90fd\u662f\u6210\u5458\u53d8\u91cf
B\uff0ex\u662f\u5b9e\u4f8b\u53d8\u91cf\u3001y\u662f\u7c7b\u53d8\u91cf\u3001s\u662f\u5c40\u90e8\u53d8\u91cf
C\uff0ex\u548cy\u662f\u5b9e\u4f8b\u53d8\u91cf\u3001s\u662f\u53c2\u6570
D\uff0ex\u3001y\u548cs\u90fd\u662f\u5b9e\u4f8b\u53d8\u91cf
4\uff0e\u9700\u8981\u5206\u6790\u5b57\u7b26\u4e32\uff0c\u5e76\u5c06\u5b57\u7b26\u4e32\u5206\u89e3\u6210\u53ef\u88ab\u72ec\u7acb\u4f7f\u7528\u7684\u5355\u8bcd\uff0c\u53ef\u4f7f\u7528java. util\u5305\u4e2d\u7684\u7c7b\u662f
\uff08 \uff09
A\uff0eString B\uff0eStringBuffer
C\uff0eStringTokenizer D\uff0estringTokenizer
5\uff0e\u8981\u4e3a\u7a0b\u5e8f\u7684\u5b50\u7a97\u53e3\u8bbe\u5b9a\u4e00\u4e2a\u7531\u5b57\u7b26\u4e32s\u6307\u5b9a\u7684\u540d\u5b57\uff0c\u53ef\u4ee5\u91c7\u7528\u7684\u4ee3\u7801\u662f\uff08 \uff09
A\uff0eJFrame(s) B\uff0ewindow(s)
C\uff0enew JFrame(s) D\uff0esuper(s)
6\uff0e\u4ee5\u4e0b\u5173\u4e8e\u83dc\u5355\u7684\u53d9\u8ff0\u4e2d\uff0c\u6b63\u786e\u7684\u662f\uff08 \uff09
A\uff0e\u83dc\u5355\u5206\u4e09\u7ea7\u5b9a\u4e49\uff0c\u6700\u9ad8\u4e00\u7ea7\u7684\u662f\u83dc\u5355\u6761\uff0c\u83dc\u5355\u6761\u4e2d\u653e\u83dc\u5355\uff0c\u83dc\u5355\u4e2d\u653e\u83dc\u5355\u9879
B\uff0e\u83dc\u5355\u5206\u4e09\u7ea7\u5b9a\u4e49\uff0c\u6700\u9ad8\u4e00\u7ea7\u7684\u662f\u83dc\u5355\uff0c\u83dc\u5355\u4e2d\u653e\u83dc\u5355\u6761\uff0c\u83dc\u5355\u6761\u4e2d\u653e\u83dc\u5355\u9879
C\uff0e\u83dc\u5355\u5206\u4e24\u7ea7\u5b9a\u4e49\uff0c\u6700\u9ad8\u4e00\u7ea7\u7684\u662f\u83dc\u5355\uff0c\u83dc\u5355\u4e2d\u653e\u83dc\u5355\u9879
D\uff0e\u83dc\u5355\u5206\u4e24\u7ea7\u5b9a\u4e49\uff0c\u6700\u9ad8\u4e00\u7ea7\u7684\u662f\u83dc\u5355\u6761\uff0c\u83dc\u5355\u6761\u4e2d\u653e\u83dc\u5355\u9879
7\uff0e\u4ee5\u4e0b\u6240\u8ff0\u5185\u5bb9\u5168\u90e8\u662f\u5b57\u578b\u8981\u7d20\u7684\u662f\uff08 \uff09
A\uff0e\u5b57\u4f53\u3001\u5b57\u5f62\u548c\u5927\u5c0f B\uff0e\u5b57\u4f53\u3001\u98ce\u683c\u548c\u5b57\u53f7
C\uff0e\u5b57\u5f62\u3001\u98ce\u683c\u548c\u5b57\u53f7 D\uff0e\u5b57\u5f62\u3001\u989c\u8272\u548c\u5b57\u53f7
8\uff0e\u7528Thread\u5b50\u7c7b\u5b9e\u73b0\u591a\u7ebf\u7a0b\u7684\u6b65\u9aa4\u987a\u5e8f\u662f\uff08 \uff09
A\uff0e\u58f0\u660eThread\u7c7b\u7684\u5b50\u7c7b\uff0c\u521b\u5efaThread\u5b50\u7c7b\u7684\u5b9e\u4f8b\uff0c\u8ba9\u7ebf\u7a0b\u8c03\u7528start()\u65b9\u6cd5
B\uff0e\u58f0\u660eThread\u7c7b\u7684\u5b50\u7c7b\uff0c\u5728\u5b50\u7c7b\u4e2d\u91cd\u65b0\u5b9a\u4e49run()\u65b9\u6cd5\uff0c\u521b\u5efaThread\u5b50\u7c7b\u7684\u5b9e\u4f8b
C\uff0e\u521b\u5efaThread\u5b50\u7c7b\u7684\u5b9e\u4f8b\uff0c\u8ba9\u7ebf\u7a0b\u8c03\u7528start()\u65b9\u6cd5
D\uff0e\u58f0\u660eThread\u7c7b\u7684\u5b50\u7c7b\uff0c\u5728\u5b50\u7c7b\u4e2d\u91cd\u65b0\u5b9a\u4e49run()\u65b9\u6cd5\uff0c\u521b\u5efaThread\u5b50\u7c7b\u7684\u5b9e\u4f8b\uff0c\u8ba9\u7ebf\u7a0b\u8c03\u7528start()\u65b9\u6cd5
9\uff0e\u4e3a16\u4f4dUnicode\u5b57\u7b26\u6d41\u63d0\u4f9b\u8bfb\u548c\u5199\u64cd\u4f5c\u652f\u6301\u7684\u7c7b\u5206\u522b\u662f\uff08 \uff09
A\uff0eFileInputStream\u7c7b\u548cFileOutputStream\u7c7b
B\uff0eInputStream\u7c7b\u548cOutputStream\u7c7b
C\uff0eFileReader\u7c7b\u548cFileWriter\u7c7b
D\uff0eFile_Reader\u7c7b\u548cFile_Writer\u7c7b
10\uff0e\u80fd\u5229\u7528\u5bf9\u8c61\u63d0\u4f9b\u7684\u65b9\u6cd5\u83b7\u5f97\u6d41\u5bf9\u8c61\u548c\u5b9e\u73b0\u7f51\u7edc\u8fde\u63a5\u7684\u662f\uff08 \uff09
A\uff0eURLConnection\u5bf9\u8c61 B\uff0eURL\u5bf9\u8c61
C\uff0eInetAddress\u5bf9\u8c61 D\uff0eTCP/IP\u5bf9\u8c61
\u4e8c\u3001\u586b\u7a7a\u9898\uff08\u672c\u5927\u9898\u517110\u5c0f\u9898\uff0c\u6bcf\u5c0f\u98982\u5206\uff0c\u517120\u5206\uff09
\u8bf7\u5728\u6bcf\u5c0f\u9898\u7684\u7a7a\u683c\u4e2d\u586b\u4e0a\u6b63\u786e\u7b54\u6848\u3002\u9519\u586b\u3001\u4e0d\u586b\u5747\u65e0\u5206\u3002
11.\u4e00\u4e2a\u5c0f\u5e94\u7528\u7a0b\u5e8f\u5fc5\u987b\u5b9a\u4e49\u6210\u4e00\u4e2a_________\u3002
12.\u7528\u6761\u4ef6\u8fd0\u7b97\u7b26\u6784\u9020\u4e00\u4e2a\u8868\u8fbe\u5f0f\uff1agoal\u7b49\u4e8e10\u65f6\uff0c\u8868\u8fbe\u5f0f\u7684\u503c\u4e3a\u201c\u5bf9\u4e86\uff01\u201d\uff0c\u5426\u5219\uff0c\u8868\u8fbe\u5f0f\u7684\u503c\u4e3a\u201c\u9519\u4e86\uff01\u201d\u3002\u8fd9\u4e2a\u8868\u8fbe\u5f0f\u662f_________\u3002
13.\u7c7b\u662f\u5bf9\u4e00\u7ec4\u76f8\u540c\u5bf9\u8c61\u7684\u63cf\u8ff0\uff0c\u7c7b\u6982\u62ec\u4e86\u540c\u7c7b\u5bf9\u8c61\u7684\u5171\u6709\u6027\u8d28\uff1a_________\u3002
14.\u8bbe\u6709\u6570\u7ec4a\u548cb\u7684\u5b9a\u4e49\u5982\u4e0b\uff1a
int[]a=;int[]b=
\u2026\u2026
\u6267\u884c\u4ee5\u4e0b\u4ee3\u7801\u201ca=b\uff1b\u201d,\u9664\u4e86\u5b8c\u6210\u8d4b\u503c\u64cd\u4f5c\u4e4b\u5916\uff0c\u5f15\u8d77\u7cfb\u7edf\u989d\u5916\u8981\u505a\u7684\u5de5\u4f5c\u662f_________\u3002
15. _________\u5e03\u5c40\u4f7f\u5bb9\u5668\u7684\u591a\u4e2a\u7ec4\u4ef6\u62e5\u6709\u540c\u4e00\u4e2a\u663e\u793a\u7a7a\u95f4\uff0c\u67d0\u4e00\u65f6\u523b\u53ea\u80fd\u663e\u793a\u4e00\u4e2a\u7ec4\u4ef6\u3002
16.Java\u8bed\u8a00\u4e3a\u5904\u7406\u9f20\u6807\u4e8b\u4ef6\u63d0\u4f9b\u4e24\u4e2a\u63a5\u53e3\uff1a_________\u63a5\u53e3\u548cMouseMotionListener\u63a5\u53e3\u3002
17.\u67d0\u4e2a\u7ed8\u56fe\u65b9\u6cd5\u8bbe\u7f6e\u6210\u201c\u5f02\u6216\u6a21\u5f0f\u201d\u7ed8\u56fe\uff0c\u5e76\u7528\u9ec4\u8272\u4f5c\u4e3a\u5f02\u6216\u6a21\u5f0f\u8bbe\u5b9a\u7684\u7ed8\u56fe\u989c\u8272\u3002\u5982\u679c\u5f53\u65f6\u80cc\u666f\u8272\u4e3a\u7ea2\u8272\uff0c\u5e76\u7528\u7ea2\u8272\u7ed8\u5236\u7ebf\u6bb5\uff0c\u5219\u7ebf\u6bb5\u7684\u5b9e\u9645\u989c\u8272\u662f_________\u3002
18.\u7a0b\u5e8f\u5458\u7528Java\u8bed\u8a00\u7f16\u5199\u591a\u7ebf\u7a0b\u5e94\u7528\u7a0b\u5e8f\uff0c\u7a0b\u5e8f\u5458\u80fd\u63a7\u5236\u7684\u5173\u952e\u6027\u5de5\u4f5c\u6709\u4e24\u4e2a\u65b9\u9762\uff1a\u4e00\u662f\u7f16\u5199\u7ebf\u7a0b\u7684_________\u65b9\u6cd5\uff1b\u4e8c\u662f\u5efa\u7acb\u7ebf\u7a0b\u5b9e\u4f8b\u3002
19.BufferedWriter\u7c7b\u662f\u63d0\u4f9b\u7f13\u51b2\u5f0f\u8f93\u51fa\u7684\u7c7b\u3002\u7a0b\u5e8f\u9700\u8981\u5148\u521b\u5efa_________\u5bf9\u8c61\uff0c\u518d\u5229\u7528\u8fd9\u4e2a\u5bf9\u8c61\u521b\u5efaBufferedWriter\u5bf9\u8c61\u3002
20.\u5728Java\u8bed\u8a00\u4e2d\uff0c\u5ba2\u6237\u7aef\u4f7f\u7528\u7684\u5957\u63a5\u5b57\u7c7b\u662f_________\u3002
\u4e09\u3001\u7b80\u7b54\u9898\uff08\u672c\u5927\u9898\u51716\u5c0f\u9898\uff0c\u6bcf\u5c0f\u98983\u5206\uff0c\u517118\u5206\uff09
21.\u8bf7\u5199\u51fa\u8868\u793a\u6761\u4ef6\u201cx=2\u4e0ey=3\u6709\u4e14\u53ea\u6709\u4e00\u4e2a\u6210\u7acb\u201d\u7684Java\u8868\u8fbe\u5f0f\u201d\u3002
22.\u5982\u679c\u7c7bStudent\u662f\u7c7bPerson\u7684\u5b50\u7c7b\uff0c\u7c7bUndergraduate\u662f\u7c7bStudent\u7684\u5b50\u7c7b\uff0c\u8bf7\u6307\u51fa\u4ee5\u4e0b\u4ee3\u7801\u884c\u4e2d\u54ea\u4e9b\u662f\u4e0d\u5408\u6cd5\u7684\u3002
Person p1=new Student();
Person p2=new Undergraduate();
Student s1=new Person();
Student s2=new Undergraduate();
Undergraduate ug1=new Person();
Undergraduate ug2=new Student();
Object ob=new Student();
23.\u8bf7\u5199\u51fa\u7a0b\u5e8f\u5904\u7406\u6587\u672c\u6846\u8f93\u5165\u7ed3\u675f\u4e8b\u4ef6\uff08\u56de\u8f66\uff09\u6dfb\u52a0\u76d1\u89c6\u5668\u7684\u65b9\u6cd5\uff0c\u4ee5\u53ca\u76d1\u89c6\u5668\u7c7b\u5fc5\u987b\u5b9e\u73b0\u7684\u63a5\u53e3\u65b9\u6cd5\u3002
24.\u8bf7\u5199\u51fa\u4e00\u6761\u8bed\u53e5\uff0c\u80fd\u591f\u7ed8\u5236\u4e00\u6761\u4ece\u70b9\uff0820\uff0c30\uff09\u5f00\u59cb\uff0c\u957f\u4e3a100\u50cf\u7d20\u7684\u6c34\u5e73\u7ebf\u6bb5\u3002\u8bbe\u8c03\u7528\u7684\u5bf9\u8c61\u662f\u7c7b\u578b\u4e3aGraphics\u7684g\u3002
25.\u67d0Java\u7a0b\u5e8f\u8981\u4f7f\u7528\u6587\u4ef6\u8f93\u5165\u8f93\u51fa\u6d41\uff0c\u8bf7\u5199\u51fa\u8be5\u7a0b\u5e8f\u6240\u9700\u8981\u7684import\u8bed\u53e5\u3002
26.JDBC\u662fJava\u7a0b\u5e8f\u4e0e\u6570\u636e\u5e93\u8fde\u63a5\u7684API\uff0c\u8bf7\u5199\u51faJDBC\u80fd\u505a\u7684\u4e09\u4ef6\u4e8b\u60c5\u3002
\u56db\u3001\u7a0b\u5e8f\u586b\u7a7a\u9898\uff08\u672c\u5927\u9898\u51715\u5c0f\u9898\uff0c\u6bcf\u7a7a2\u5206\uff0c\u517120\u5206\uff09
27.\u65b9\u6cd5int maxDigit(int n)\u7684\u529f\u80fd\u662f\u627e\u51fa\u5341\u8fdb\u5236\u6574\u6570n\u5404\u4f4d\u4e2d\u6700\u5927\u7684\u4e00\u4f4d\u6570\u5b57\u3002\u4f8b\u5982\uff0cn=23765\uff0c\u8be5\u65b9\u6cd5\u7684\u8fd4\u56de\u503c\u662f7\u3002
static int maxDigit(int n){
int c=0,d;
while(n\uff1e0){
d=_______;
if(d\uff1ec) c=d;
n/=10;
}
________;
}
28.\u67d0\u7a0b\u5e8f\u7684\u754c\u9762\u5305\u542b\u4e00\u4e2a\u6587\u672c\u533atext1\u3001\u4e00\u4e2a\u6587\u672c\u6846text2\u548c\u4e00\u4e2a\u6309\u94aebutton\u3002\u5b9e\u73b0\u5728\u6587\u672c\u533a\u4e2d\u8f93\u5165\u6574\u6570\u5e8f\u5217\u540e\uff0c\u70b9\u51fb\u6309\u94ae\uff0c\u7a0b\u5e8f\u54cd\u5e94\u6309\u94ae\u4e8b\u4ef6\uff0c\u7d2f\u8ba1\u6587\u672c\u533a\u8f93\u5165\u7684\u6574\u6570\u5e8f\u5217\uff0c\u5e76\u5c06\u603b\u548c\u8f93\u51fa\u5728\u6587\u672c\u6846\u4e2d\u3002\u8fd9\u91cc\u7ed9\u51fa\u7684\u662f\u5176\u4e2d\u76f8\u5e94\u6309\u94ae\u4e8b\u4ef6\u7684\u65b9\u6cd5\u3002
public void actionPerformed(ActionEvent e){
int sum;
if(e.getSource()==button){
String s=text1.________;//\u83b7\u53d6text1\u4e2d\u7684\u4fe1\u606f
StringTokenizer fenxi=new StringTokenizer(s,\u201d,,,\n\u201d);
int n=fenxi.countTokens();
double a[]=new double[n];
for(int i=0;i\uff1cn;i++){
String temp=fenxi.nextToken();
a[i]=Double.valueOf(temp).doubleValue();
}
sum=0;
for(int i=0;i\uff1cn;i++){
__________;
}
text2.setText(\u201d\u201d+sum);//\u5237\u65b0\u663e\u793a\u3002
}
}
29.\u4ee5\u4e0b\u662f\u751f\u6210\u83dc\u5355\u9879\u5bf9\u8c61\uff0c\u4ee5\u53ca\u83dc\u5355\u9879\u9009\u62e9\u4e8b\u4ef6\u5904\u7406\u65b9\u6cd5\u7684\u90e8\u5206\u4ee3\u7801\u3002\u8981\u6c42\u5f53\u83dc\u5355\u9879singingItem\u88ab\u9009\u4e2d\u65f6\uff0c\u5728\u6587\u672c\u6846text\u4e2d\u8f93\u51fa\u201c\u5531\u6b4c\u83dc\u5355\u9879\u88ab\u9009\u4e2d\uff01\u201d\u7684\u5b57\u6837\u3002
\u2026\u2026
singingItem=new________(\u201d\u5531\u6b4c\u201d)\uff1b//\u751f\u6210\u83dc\u5355\u9879\u5bf9\u8c61
\u2026\u2026
public void actionPerformed(ActionEvent e){
if(e.getSource()==singingItem)
text.setText(e.________()+ \u201d\u83dc\u5355\u9879\u88ab\u9009\u4e2d!\u201d)\uff1b
}
30.\u67d0\u5c0f\u5e94\u7528\u7a0b\u5e8f\u5b9e\u73b0\u5e7b\u706f\u7247\u653e\u6620\u3002\u5c0f\u5e94\u7528\u7a0b\u5e8f\u7684init()\u65b9\u6cd5\u5c06\u5e7b\u706f\u7247\u8bfb\u5165\u6570\u7ec4\u4e2d\u5b58\u50a8\u548c\u6ce8\u518c\u9f20\u6807\u76d1\u89c6\u5668\u3002\u7a0b\u5e8f\u8fd0\u884c\u65f6\uff0c\u5355\u51fb\u9f20\u6807\uff0c\u5c31\u987a\u5e8f\u53d8\u6362\u653e\u6620\u5e7b\u706f\u7247\u7684\u5e8f\u53f7\u3002\u8fd9\u91cc\u7ed9\u51fa\u7684\u662f\u5176\u4e2d\u7684paint()\u65b9\u6cd5\u548cmousePressed()\u65b9\u6cd5\u3002
final int number=30;//\u5047\u5b9a\u5e7b\u706f\u7247\u670930\u5f20
int count=0;
Image[]pic=new Image[number];
public void paint(______gc){
if((pic[count])!=null)
gc.drawImage(pic[count],10,10,pic[count].getWidth(this),
pic[count].getHeight(this),this);
}
public void mousePressed(MouseEvent e){
count=(count+1)% number;//\u5faa\u73af\u9010\u5f20\u663e\u793a
__________;
}
31.\u4ee5\u4e0b\u5b9a\u4e49\u7684\u7c7bshareDataManager\u7528\u4e8e\u7ba1\u7406\u591a\u4e2a\u7ebf\u7a0b\u5171\u4eab\u6570\u636edata\u3002\u4e00\u4e9b\u7ebf\u7a0b\u8981\u51cf\u5c11data\uff0c\u53e6\u4e00\u4e9b\u7ebf\u7a0b\u8981\u589e\u52a0data\u3002\u7531\u4e8edata\u4e0d\u53ef\u4ee5\u662f\u8d1f\u503c\uff0c\u4fee\u6539data\u7684\u65b9\u6cd5\u5bf9\u8fd9\u4e9b\u7ebf\u7a0b\u6765\u8bf4\u4e0d\u4ec5\u8981\u4e92\u65a5\uff0c\u8fd8\u8981\u540c\u6b65\u3002\u7c7b\u63d0\u4f9b\u4e00\u4e2a\u65b9\u6cd5modiData()\u4f9b\u4fee\u6539data\u7684\u7ebf\u7a0b\u8c03\u7528\uff0c\u8be5\u65b9\u6cd5\u5728data\u4fee\u6539\u7ed3\u675f\u540e\uff0c\u5e94\u901a\u77e5\u5176\u5b83\u7b49\u5f85\u8fdb\u5165\u8fd9\u4e2a\u65b9\u6cd5\u7684\u7ebf\u7a0b\u3002
class ShareDataManager{
int data=0;
________void modiData(int delta){
if(delta\uff1e=0){
data+=delta;
}else {
while(data \uff1cdelta){
try{System.out.println(\u201d\u53d1\u751f\u7b49\u5f85\uff01\u201d)\uff1b
wait();
}catch(InterruptedException e)
}
data-=delta;
}
_________;
}
ShareDataManager(int ititData)
}
\u4e94\u3001\u7a0b\u5e8f\u5206\u6790\u9898\uff08\u672c\u5927\u9898\u51715\u5c0f\u9898\uff0c\u6bcf\u5c0f\u98984\u5206\uff0c\u517120\u5206\uff09
32.\u9605\u8bfb\u4e0b\u5217\u7a0b\u5e8f\uff0c\u8bf7\u5199\u51fa\u8be5\u7a0b\u5e8f\u7684\u8f93\u51fa\u7ed3\u679c\u3002
import java.applet.*;import java.awt.*;
class Point{
int x,y;
Point(int xx,int yy)
Point(Point p)
void m(int dx,int dy)
}
class Circle extends Point{
int r;
Circle(Point p, int rr)
float c()
float a()
}
public class sample extends Applet{
Circle yuan; Point d;
public void init()
public void paint(Graphics g){
g.drawString(\u201dyuan Circle\u201d+(int)(yuan.c()*100.0)/100.0,5,20);
g.drawString(\u201dyuan Area\u201d+(int)(yuan.a()*100.0)/100.0,5,40);
}
}
33\uff0e\u9605\u8bfb\u4e0b\u5217\u7a0b\u5e8f\uff0c\u8bf7\u5199\u51fa\u8be5\u7a0b\u5e8f\u7684\u529f\u80fd\u3002
import java. util.*;
public class Class1{
public static void main(Srting args[]){
Date date1=new Date();
System. out. println (datel);
String t=datel.toString();
int endPos=t.indexOf(\u2018C\u2019);
t=t.substring(11,endPos);
System. out println(t);
}
}
34.\u9605\u8bfb\u4e0b\u5217\u7a0b\u5e8f\uff0c\u8bf7\u5199\u51fa\u8be5\u7a0b\u5e8f\u7684\u529f\u80fd\u3002
import java.applet.*;import javax.swing.*;import java.awt.event.*;
public class Class l extends Applet implements ActionListener{
JTextField text1,text2;
public void init(){
text1=new JTextField(10); text2=new JTextField(10);
setSize(200,100); add(text1); add(text2);
text1.addActionListener(this);
}
public void actionPerformed(Action Event e){
long n;
if(e.getSource()==text1){
n=Long.parseLong(text1.getText());
text2.setText(String.valueOf(n*n));
}
}
}
35.\u9605\u8bfb\u4ee5\u4e0b\u7a0b\u5e8f\uff0c\u8bf7\u5199\u51fa\u8be5\u7a0b\u5e8f\u7684\u529f\u80fd\u3002
import javax.swing.*; import java.awt.*;import java.awt.event.*;
class MyScrollBar extends JscrollBar{
public MyScrollBar(int init, int len, int low, int high){
super(JScrollBar. HORIZONTAL, init,len,low,high);
}
}
class MyWindow extends JFrame implements AdjustmentListener{
private JTextField text;
MyWindow(String s){
super(s);
MyScrollBar myBar=new MyScrollBar(10,10,0,255);
Container con=this. getContentPane();
con. setLayout(new GridLayout(2,1));
this. setSize(200,100);
this. setLocation(100,100);
myBar.addAdjustmentListener(this);
text=new JTextField(\u201d\u201d,20);
con. add(text);con.add(myBar);
this.setVisible(true);
}
public void adjustmentValueChanged(AdjustmentEvent e){
MyScrollBar myBar=(MyScrollBar)e.getAdjustable();
text.setText(\u201d\u201d+myBar.getValue());
}
}
public class Class1{
public static void main(String[]args){
MyWindow myWindow=new MyWindow(\u201dtext5_4\u201d);
}
}
36.\u5c0f\u5e94\u7528\u7a0b\u5e8f\u521b\u5efa\u4e00\u4e2a\u7ebf\u7a0b\u3002\u4f8b\u5b50\u4f7f\u7528\u5bb9\u5668\u7c7b\u65b9\u6cd5getGraphics()\u83b7\u5f97Graphics\u5bf9\u8c61\uff0c\u7ed9\u7ebf\u7a0b\u4f5c\u4e3a\u753b\u7b14\u4f7f\u7528\u3002\u8bf7\u5199\u51fa\u8be5\u7a0b\u5e8f\u4e2d\u8fd9\u4e2a\u7ebf\u7a0b\u7684\u5de5\u4f5c\u5185\u5bb9\u3002
import java.applet.*;import java.awt.*;
public class Class1 extends java.applet.Applet implements Runnable{
Thread redBall;Graphics redPen;
int rx=0,ry=0;
public void init(){
setSize(250,200);
redBall =new Thread(this);
redPen=getGraphics();
redPen. setColor(Color.red);
setBackground(Color.gray);
}
public void start()
public void run(){
while(true){
if(Thread.currentThread()==redBall){
rx=(int)(80*Math.random());
ry=(int)(80*Math.random());
red Pen.setColor(Color.red);
red Pen.fillOval(100+rx,100+ry,10,10);
try
catch(InterruptedException e){}
redPen.setColor(Color.gray);
redPen.fillOval(100+rx,100+ry,10,10);
}
}
}
}
\u516d\u3001\u7a0b\u5e8f\u8bbe\u8ba1\u9898\uff08\u672c\u5927\u9898\u51712\u5c0f\u9898\uff0c\u6bcf\u5c0f\u98986\u5206\uff0c\u517112\u5206\uff09
37\uff0e\u7f16\u5199\u4e00\u4e2a\u65b9\u6cd5halfArray()\uff0c\u8981\u6c42\u8be5\u65b9\u6cd5\u6709\u4e00\u4e2a\u5143\u7d20\u7c7b\u578b\u4e3aint\u7684\u6570\u7ec4\u53c2\u6570\uff0c\u65b9\u6cd5\u8fd4\u56de\u4e00\u4e2a\u65b0\u6570\u7ec4\uff0c\u65b0\u6570\u7ec4\u7684\u957f\u5ea6\u4e0e\u53c2\u6570\u6570\u7ec4\u7684\u957f\u5ea6\u76f8\u540c\uff0c\u800c\u65b0\u6570\u7ec4\u5143\u7d20\u7684\u503c\u662f\u53c2\u6570\u6570\u7ec4\u5404\u5143\u7d20\u7684\u4e00\u534a\u3002
38\uff0e\u4e00\u4e2aJava\u5c0f\u5e94\u7528\u7a0b\u5e8f\uff0c\u754c\u9762\u6709\u4e09\u4e2a\u6587\u672c\u6846\u548c\u4e24\u4e2a\u6309\u94ae\uff0c\u524d\u4e24\u4e2a\u6587\u672c\u6846\u7528\u4e8e\u8f93\u5165\u6574\u6570\uff0c\u7b2c\u4e09\u4e2a\u6587\u672c\u6846\u7528\u4e8e\u8f93\u51fa\u7ed3\u679c\u3002\u4e24\u4e2a\u6309\u94ae\u5206\u522b\u8868\u793a\u52a0\u548c\u51cf\u8fd0\u7b97\u3002\u5f53\u524d\u4e24\u4e2a\u6587\u672c\u6846\u8f93\u5165\u6574\u6570\u540e\uff0c\u70b9\u51fb\u76f8\u5e94\u6309\u94ae\uff0c\u7a0b\u5e8f\u5c31\u5c06\u8ba1\u7b97\u7ed3\u679c\u8f93\u51fa\u5728\u7b2c\u4e09\u4e2a\u6587\u672c\u6846\u4e2d\u3002\u4ee5\u4e0b\u662f\u7a0b\u5e8f\u7684\u5927\u90e8\u5206\uff0c\u5176\u4e2d\u76d1\u89c6\u6309\u94ae\u4e8b\u4ef6\u7684\u65b9\u6cd5\u672a\u7ed9\u51fa\uff0c\u8bd5\u7f16\u5199\u5904\u7406\u6309\u94ae\u4e8b\u4ef6\u7684\u65b9\u6cd5\u3002
\u6ce8\uff1a\u8fd9\u91cc\u662f\u7ed9\u5b9a\u90e8\u5206\u7684\u7a0b\u5e8f\uff0c\u4f60\u8981\u7f16\u5199\u7684\u662factionPerformed(ActionEvent e)\u65b9\u6cd5\u3002
import java.applet.*;import javax.swing.*;
import java.awt.*; import java.awt.event.*;
class Panel1 extends JPanel{
JTextField text1, text2, text3;JButton addButton,subButton;
Panel1(){
text1=new JTextField(10);text2=new JTextField(10);
text3=new JTextField(10);setLayout(new GridLayout(5,1));
addButton=new JButton(\u201d\u52a0\u201d)\uff1bsubButton=new JButton(\u201d\u51cf\u201d)\uff1b
add(text1); add(text2);
add(text3); add(addButton); add(subButton);
}
}
public class Classl extends Applet implements ActionListener{
Pane1 panel;
public void init(){
setSize(100,200); panel=new Panel1();add(panel);
(panel.addButton).addActionListener(this);
(panel.subButton). addActionListener(this);
}
public void actionPerformed(ActionEvent e){
section；division 是数学符号：分节号 的意思。
希望对你有帮助。
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绛旓細鍥犱负瑕佷綔涓涓16*16鐐归樀鐢靛瓙鏄剧ず灞忛渶瑕佹妸16涓8*8鐐归樀绾ц仈,璇烽棶濡備綍鎶涓や釜8*8鐐归樀鐨勫紩鑴氱骇鑱斻傘傘... 鍥犱负瑕佷綔涓涓16*16鐐归樀鐢靛瓙鏄剧ず灞忛渶瑕佹妸16涓8*8鐐归樀绾ц仈,璇烽棶濡備綍鎶婁袱涓8*8鐐归樀鐨勫紩鑴氱骇鑱斻傘傘 灞曞紑 3涓洖绛 #鐑# 浣犲彂鏈嬪弸鍦堜細浣跨敤閮ㄥ垎浜哄彲瑙佸姛鑳藉悧?
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