java - 程序未按预期运行

我写了一个游戏代码，给您一个单词来拼写。但是即使写了正确的单词，也没有得到“您赢了”的信息。我得到的只是“错误答案”。请找出错误并提出改进方法。

import java.util.*;
public class game {
public static void main(String args[]){
    Scanner input=new Scanner(System.in);
    Random rand=new Random();

    //THE WORD DIRECTORY
    String[][] list=new String[][]{
            {"google","a search engine"},
            {"facebook","a social networking site"},
            {"java", "this language"},
      };

    //CHOOSING THRE WORD
    int n=rand.nextInt(3);
    String theword=list[n][0];
    String thehint=list[n][1];

    //JUMBLING THE WORD
    String jumbledword=theword;
    char a[] = jumbledword.toCharArray();
    for(int i=0;i<jumbledword.length();i++){
        int input1=rand.nextInt(jumbledword.length());
        int input2=rand.nextInt(jumbledword.length());
        char temp=a[input1];
        a[input1]=a[input2];
        a[input2]=temp;

    }

    //THE GAME

        System.out.println("\t\tWELCOME TO JUMBLE WORD");
        System.out.println("1.Unscrabble the given word");
        System.out.println("2.Press 'hint'for hint");
        System.out.println("3.Press 'quit' to quit");
        System.out.print("The word:" );
        System.out.println(a);
     String guess;
    do{    guess=input.nextLine();

    if(guess==theword){
        System.out.println("YOU WIN");
    }
    else if(guess=="hint"){
        System.out.println(thehint);
    }
    else if(guess=="quit"){
        System.out.println("Better luck next time. The answer is :");
        System.out.println(theword);
    }
    else{
        System.out.println("Wrong answer .Try again");
    }




}while(!guess.equals("quit")&&!guess.equals(theword));

}}

欢迎任何建议。

最佳答案

==运算符用于检查对象是否相等，而不是值。您想改用equals方法。

代替

if(guess==theword){

使用

if(guess.equals(theword)){

为了进一步阐述，假设您有三个字符串：

String s1 = new String("abc");
String s2 = s1;
String s3 = new String("abc");

在这种情况下，将发生以下结果：

s1.equals(s2); // true, same value
s1 == s2; // true, same object
s1.equals(s3); // true, same value
s1 == s3; // false, different objects

关于java - 程序未按预期运行，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/28852664/