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]);
    } 
}
}