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("644050655@qq.com", "[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]);
     }
 }
 }