public boolean matches(String regex):字符串匹配

public String replaceAll(String regex,String replacement):字符串替换

public String[] split(String regex):字符串拆分

package com.hephec

public class RegexDemo{

public static void main(String[] args){

String str1="A!B2C3D4afeiawfeaawefafef54".replaceAll("\\d+","_");

boolean temp="2014-10-19".matches("\\d{4}-\\d{2}-\\d{2}");

String[] str2="afhapfapfap32423pqnfaps".split("\\d+");

...

}

}