判断密码的小方法(记一下不怕忘了)

package test;

import java.util.regex.Matcher;
import java.util.regex.Pattern;

public class TestPassword {
	public static void main(String args[]){
		String password="hahymfghdfg";
		
		Pattern   p   =   Pattern.compile("[A-Z]+");   
        Pattern   q   =   Pattern.compile("[a-z]+");   
        Pattern   r   =   Pattern.compile("[0-9]+");   
        Pattern   s   =   Pattern.compile("\\p{Punct}+");   
          Matcher   m1   =   p.matcher(password);     //判断是否含有大写字符   
        Matcher   m2=   q.matcher(password);   //判断是否含有小写字符   
        Matcher   m3   =   r.matcher(password);//判断是否含有数字   
        Matcher   m4   =   s.matcher(password);//判断是否含有特殊字符   
          if(m2.find(0)&&( !m4.find(0)) ){
        	  System.out.println("密码符合规则"); 
          }
          else{                                                         
               System.out.println("密码不符合规则");  
          }
		
	}

}