java String类对正则表达式的支持

/*
 * 1>matchers()字符串匹配
 * 2>replaceAll()替换字符
 * 3>split()拆分字符串
 */
package com.pattern;
public class string {
    public static void main(String[] args){
        //1>matchers()字符串匹配
        String s1 = "wewe中国人";
        Boolean b = s1.matches("\\w*中国人");
        System.out.println(b);
          
        //2>replaceAll()替换字符
        String s2 = "李二李三李四李五";
        String result = s2.replaceAll("李", "张");
        System.out.println(result);
          
        //3>split()拆分字符串
        String s3 = "中国人|龙的传人/李小龙";
        String arr[] = s3.split("\\||\\/");
        for(int i=0;i<arr.length;i++){
            System.out.println(arr[i]);
        }
    }
}