String 字符串之值替换方法

package day06;

import java.util.Scanner;

public class Date02 {
    public static void main(String[] args) {
        
//        Scanner name = new Scanner(System.in);
//        System.out.println("请输入一个六位字符的字符串");
//        String name1 = name.nextLine();
//        System.out.println(name1);
        
        String name = "mayikt666meite666";
        String newname = name.replaceFirst("666", "888");
        String newname1 = name.replaceAll("666", "888");
        String newname2 = name.replace("666", "888");
        System.out.println(name);
        System.out.println(newname);
        System.out.println(newname1);
        System.out.println(newname2);
    }
}