Java中字符串的拼接和转义

Java中字符串的拼接和转义

package com.testToken.demo;

public class Test {
    public static void main(String[] args) {
        String str="Apple";
        System.out.println(str);

        String str2="\"Apple\""; //输出"Apple"
        System.out.println(str2);

        String str3="A apple \"pie\" ";
        System.out.println(str3);

        String str4="\\Apple";
        System.out.println(str4);

        String flag="true";
        String token="123";
        String res="{\"flag\":"+flag+",\"token\":\""+token+"\"}"; 
        System.out.println(res);

        String res2="{\"flag\":\"" +flag+"\",\"token\":\""+token+"\"}"; 
        System.out.println(res2);
    }

}