从另一个方法引用方法时需要标识符

Question

I'm new to java so please bear with me while I explain my issue.

I'm receiving an "identifier expected" error and having trouble figuring out why. I'm working on a guessing random number game with 3 different methods, randomNumber() for generating the random number and returning it as an int, userAttempt() for prompting and accepting the user guess and returning it as an int, and isGuessCorrect for comparing the user guess to the generated number.

My problem lies in this third method. I want it to call upon the variables returned from randomNumber() and userAttempt() to compare the two (whether they're equal or if they're higher/lower).

Currently I'm declaring isGuessCorrect() as:

public static void isGuessCorrect( randomNumber(), userAttempt() ){}

This is where I'm getting my error.

So far I've tried calling the return values as they're initialized in my main method:

public static void isGuessCorrect( correctAnswer, userGuess ){}

I've also tried declaring the values inside isGuessCorrect():

public static void isGuessCorrect( randomNumber(), userAttempt() ){
    int correctAnswer1 = randomNumber();
    int userGuess1 = userAttempt();
}

If all that still doesn't make sense, here's my code in it's entirety:

import java.util.Random;
import java.util.Scanner;
    
public class GuessingGame {

    public static void main( String args[] ){
    
      int correctAnswer = randomNumber();
      int userGuess = userAttempt();

        randomNumber();
        userAttempt();
        isGuessCorrect();
    }
    
// randomNumber() is meant to generate a number between 1-100. 
// For testing purposes the number is then printed out.
// randomNumber() returns int generatedAnswer for future use in isGuessCorrect()
    
    public static int randomNumber(){
       
      Random rand = new Random();
        int generatedAnswer = rand.nextInt(100) + 1;
        System.out.println("Correct answer is: " + generatedAnswer); 
        return generatedAnswer;
    }
    
// userAttempt() is meant to prompt the user to enter in their guess 
// For testing purposes the guess is then printed out.
// userAttempt() returns int guessNumber for future use in isGuessCorrect()
    
    public static int userAttempt(){
      
      System.out.println("Please enter in your guess (1-100)");
      Scanner userGuessInput = new Scanner(System.in);
      int guessNumber = userGuessInput.nextInt();
      System.out.println("Your guess is: " + guessNumber);
      return guessNumber;
      
    }
    
    public static void isGuessCorrect( randomNumber(), userAttempt() ){
      
      if(userGuess == correctAnswer){
         
         System.out.println ("Correct! You win! :)");
      }else if(userGuess < correctAnswer){
         
         System.out.println ("Wrong. Try guessing higher next time!");
      }else{
      
         System.out.println ("Wrong. Try guessing lower next time!");
      }
      
    }


}

Answer 1

try doing this instead

public static void isGuessCorrect(){


  correctAnswer= randomNumber();
  userGuess = userAttempt();

  if(userGuess == correctAnswer){
     
     System.out.println ("Correct! You win! :)");
  }else if(userGuess < correctAnswer){
     
     System.out.println ("Wrong. Try guessing higher next time!");
  }else{
  
     System.out.println ("Wrong. Try guessing lower next time!");
  }
  
}