暴力破解,直接采用contains函数

import java.util.*;
public class Main{
    public static void main(String [] args){
        getStringAppear();
    }
    public static void getStringAppear(){
        Scanner scan = new Scanner(System.in);
        while(scan.hasNext()){
            String str1 = scan.nextLine();
            String str2 = scan.nextLine();
            boolean falg = true;
            for(int i = 0; i < str1.length(); i++){
                String temp = str1.charAt(i) + "";
                if(!str2.contains(temp)){
                    falg = false;
                }
            }
            if(falg){
                System.out.println("true");
            }else{
                System.out.println("false");
            }
        }
    }
}