java:正则匹配Pattern,Matcher

一、正则匹配Pattern,Mather

String s = "aa424fsfsd92lfjw2755097";
		Pattern p = Pattern.compile("\d+");
		String sp[] = p.split(s);
		for(int i=0; i<sp.length; i++)
		{
			System.out.println(sp[i] + "、");
		}
		

　　

1.正则匹配

//正则匹配
		//String str = "皖A38595";
		//String reg = ".\w+\d+";
		String str = "877-22-335";
		String reg = "\d{3}-\d{2}-\d{3}";
		Pattern p = Pattern.compile(reg);
		Matcher m = p.matcher(str);
		if(m.matches())
		{
			System.out.println("匹配成功");
		}else{
			System.out.println("匹配失败");
		}

　　

2.正则替换

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

public class PatternDemo3 {

	public static void main(String[] args) {
		// TODO 自动生成的方法存根
		//正则替换
		String str = "al5wfowf454jl44fdg2397dfg";
		String reg = "\d+";
		Pattern p = Pattern.compile(reg);
		Matcher m = p.matcher(str);
		System.out.println(m.replaceAll("*"));
	}

}

　　

二、String类型正则匹配

String ip = "aa@aa.com";
		System.out.println(ip.matches("\w+@\w+.\w+"));
		
		String ip2 = "127.121.11.11";
		String str[] = ip2.split("\.");
		for(int i = 0; i < str.length; i++)
		{
			System.out.println(str[i]);
		}