Go语言视频零基础入门到精通

javalearner

1. 对于常用的字符组，正则表达式提供了相应的简记法，方便地表示它们
2. d = [0-9]
3. D = [^0-9]
4. w = [0-9a-zA-Z_]
5. w = [^0-9a-zA-Z_]
6. s 匹配空白字符（回车、换行、制表、空格）
7. S 匹配非空白字符
8. 例子：
9. public class GeneralNumFive {
   
10.   public static void main(String[] args) {
    
11.    String digitChar = "\d";
    
12.    String noDigitChar = "\D";
    
13.    String wordChar = "\w";
    
14.    String noWordChar = "\W";
    
15.    String spaceChar = "\s";
    
16.    String noSapceChar = "\S";
    
17.    String[] strs = new String[] { "0", "3", "8", "9","b","d","c"," ","        ","
18. ","        "};
    
19.   for (String string : strs) {
    
20.    if(regexMatch(string,digitChar)){
    
21.     System.out.println(string +"能够匹配正则:" + digitChar);
    
22.   }else{
    
23.     System.out.println(string +"不能够匹配正则:" + digitChar);
    
24.   }
    
25. }
    
26. for (String string : strs) {
    
27.   if(regexMatch(string,noDigitChar)){
    
28.     System.out.println(string +"能够匹配正则:" + noDigitChar);
    
29.   }else{
    
30.    System.out.println(string +"不能够匹配正则:" + noDigitChar);
    
31.   }
    
32. }
    
33. for (String string : strs) {
    
34.   if(regexMatch(string,wordChar)){
    
35.    System.out.println(string +"能够匹配正则:" + wordChar);
    
36.   }else{
    
37.    System.out.println(string +"不能够匹配正则:" + wordChar);
    
38.   }
    
39. }
    
40. for (String string : strs) {
    
41. if(regexMatch(string,noWordChar)){
    
42.   System.out.println(string +"能够匹配正则:" + noWordChar);
    
43. }else{
    
44.   System.out.println(string +"不能够匹配正则:" + noWordChar);
    
45. }
    
46. }
    
47. for (String string : strs) {
    
48.   if(regexMatch(string,spaceChar)){
    
49.    System.out.println(string +"能够匹配正则:" + spaceChar);
    
50.   }else{
    
51.    System.out.println(string +"不能够匹配正则:" + spaceChar);
    
52.   }
    
53. }
    
54. for (String string : strs) {
    
55.   if(regexMatch(string,noSapceChar)){
    
56.    System.out.println(string +"能够匹配正则:" + noSapceChar);
    
57.   }else{
    
58.    System.out.println(string +"不能够匹配正则:" + noSapceChar);
    
59.   }
    
60. }
    
61. }
    
62. private static boolean regexMatch(String s, String regex) {
    
63.   return s.matches(regex);
    
64. }
    
65. }
67. 运行结果：

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C:java>java GeneralNumFive
0能够匹配正则:d
3能够匹配正则:d
8能够匹配正则:d
9能够匹配正则:d
b不能够匹配正则:d
d不能够匹配正则:d
c不能够匹配正则:d
不能够匹配正则:d
不能够匹配正则:d 不能够匹配正则:d
不能够匹配正则:d
0不能够匹配正则:D
3不能够匹配正则:D
8不能够匹配正则:D
9不能够匹配正则:D
b能够匹配正则:D
d能够匹配正则:D
c能够匹配正则:D
能够匹配正则:D
能够匹配正则:D 能够匹配正则:D
能够匹配正则:D
0能够匹配正则:w
3能够匹配正则:w
8能够匹配正则:w
9能够匹配正则:w
b能够匹配正则:w
d能够匹配正则:w
c能够匹配正则:w
不能够匹配正则:w
不能够匹配正则:w 不能够匹配正则:w
不能够匹配正则:w
0不能够匹配正则:W
3不能够匹配正则:W
8不能够匹配正则:W
9不能够匹配正则:W
b不能够匹配正则:W
d不能够匹配正则:W
c不能够匹配正则:W
能够匹配正则:W
能够匹配正则:W 能够匹配正则:W
能够匹配正则:W
0不能够匹配正则:s
3不能够匹配正则:s
8不能够匹配正则:s
9不能够匹配正则:s
b不能够匹配正则:s
d不能够匹配正则:s
c不能够匹配正则:s
能够匹配正则:s
能够匹配正则:s 能够匹配正则:s
能够匹配正则:s
0能够匹配正则:S
3能够匹配正则:S
8能够匹配正则:S
9能够匹配正则:S
b能够匹配正则:S
d能够匹配正则:S
c能够匹配正则:S
不能够匹配正则:S
不能够匹配正则:S 不能够匹配正则:S
不能够匹配正则:S C:java>

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源码下载：http://file.javaxxz.com/2014/10/31/000027953.zip