猜猜游戏不工作

Question

永远不要输入if语句。始终是else语句。只需要帮助找出if语句被忽略的原因..我的if语句有问题吗？

import java.util.Random;
import java.util.*;
public class WordGameRandom {

    public static void main(String[] args) 
{
    //sets the number of arraies and their values
   String[] words = {"Cat", "Pig", "Dog", "Rat"};
   int Max = 4;
   int x = 1;
   String guess;
   Scanner input = new Scanner(System.in);

   do{
   System.out.print("Please guess a three letter animal: ");
   guess = input.nextLine();
   System.out.println("Your word:" + guess);

   Random random = new Random();
   System.out.println("The computers word: " + 
           words[random.nextInt(words.length)]);

   if(guess == words[random.nextInt(words.length)])
   {
       System.out.println("Congrats!");
       ++x;
   }
   else
   {
       System.out.println("Fail");
   } 
   }
   while(x != 2);

}  
}