java正则表达式练习

 package shb.java.demo3;

 import java.util.regex.Matcher;

 import java.util.regex.Pattern;

 /**

  * 正则表达式简单操作

  * @Package:shb.java.demo3

  * @Description：

  * @author shaobn

  * @Date 2015-8-28上午10:54:30

  */

 public class RegexDemo2 {

 public static void main(String[] args) {

 ifTrue("[email protected]", "[0-9]{8,11}@(\\w*|[0-9]+)\\.[a-z]*");

 splitRegex("C:\\demo\\txt", "\\\\");

 ifTrue("Abc bbb", "\\AAbc\\b");

 ifTrue("131222", "(13|2|3).{2,4}2$");

 ifTrue("java", "^j.*a$");

 ifTrue("javaa", "java*");

 ifTrue("aBc123", "[a-zA-Z]{3}\\d{3,9}");

 ifTrue("13635586954", "[1][3,5,8]\\d{9}");

 ifTrue("13635586954", "[1][3,5,8]\\d*");

 splitRegex("The day   is Friday", " +");

 splitRegex("TTddayiisFFriday", "(.)\\1");

 }

 //根据正则表达式匹配字符串

 public static void ifTrue(String str,String regex){

     Pattern p = Pattern.compile(regex);

     Matcher m = p.matcher(str);

     boolean flag = m.matches();

     System.out.println(flag);

 }

 //根据正则表达式切割字符串

 public static void splitRegex(String str,String regex){

     String[] strs = str.split(regex);

     for(String s:strs){

         System.out.println(s);

     }

 }

 //根据正则表达式切割字符串

 public static void splitRegex2(){

     Pattern pattern = Pattern.compile("[, |]+");

     String[] strs = pattern.split("Java Hello World  Java,Hello,,World|Sun");

     for (int i=0;i<strs.length;i++) {

         System.out.println(strs[i]);

     }

 }

 }