Slot Machine Game

[danthegreat]

hi, it is me again. Need some help with a program of mine. I have mostly finished it, just need some help with the errors i am receiving

import java.util.*;
public class ansher_slots {
    public static void main(String [] args){
        Scanner keyboard =new Scanner(System.in);
        int num=0;
        int bet = 0;
        int won_amount=0;
        int loopvar=1;
        
        System.out.println("The World Series of Slots Machine! It's Game Time!");
        System.out.print("How many tokens are you buying? ");
        int tokens = keyboard.nextInt();
        
[B]        do{[/B]



[B]        System.out.print("You have " + tokens + " tokens. Would you like to play? (y/n): ");[/B]
[B]        String play_question = keyboard.nextLine();[/B]
        


        
        if(play_question=="y"){
            loopvar=2;
            do{
                System.out.print("How much would you like to bet? ");
                bet = keyboard.nextInt();


                
                if(bet>tokens || bet<0){
                    System.out.print("ERROR: You entered more tokens than you have or a negative number.");
                    num=1;
                }
            }while(num==1);
            
            
            System.out.print("You have bet " + bet + " tokens...Buena Suerte!");
            
            int ran1=spin();
            int ran2=spin();
            int ran3=spin();
            
            System.out.println("SPIN:  [" + ran1 + "] [" + ran2 + "] [" + ran3+ "]");
            
            won_amount=determineWin(bet, ran1, ran2, ran3);
            tokens = tokens + won_amount;
            if(won_amount>0){
                System.out.println("You won " + won_amount + " tokens!! WOW!!");
            }
            else if(won_amount==0){
                System.out.println("Sorry Big shot, You didn't win anything..Better luck next time!");
            }
            
        }
        else{
            System.exit(-1);
        }
        
        }while(loopvar==2);
        
        
    }
    
    public static int determineWin(int bet, int ran1, int ran2, int ran3){
        if(ran1==7 && ran2==7 && ran3==7){
            return bet*3;
            
        }
        else if(ran1==2 && ran2==2 || ran2==2 && ran3==2 || ran1==2 && ran3==2){
            return bet*2;
            
        }
        else if(ran1==5 || ran2==5 || ran3==5){
            return bet;
        }
        else{
            return 0;
        }
        


        
        
    }
    
    public static int spin(){
        Random randGen= new Random();
        int random_number=0;
        
        random_number=randGen.nextInt(9)+1;
        return random_number;
        
        
    }


}

for some reason, when it gets to the bolded part, I cannot enter any imput when debugging. Does anyone know what is wrong..?

This is current output:
The World Series of Slots Machine! It's Game Time!
How many tokens are you buying? 125
You have 125 tokens. Would you like to play? (y/n):


When I try to type, nothing happens...

[danthegreat]

so I added Keyboard.nextline(); befre the next "nextInt()" and it seemed to work! But when it gets to this part:

[FONT=monospace]        
if(play_question=="y"){[/FONT]
            loopvar=2;            
do{                
System.out.print("How much would you like to bet? ");                
bet = keyboard.nextInt();

It is terminated for some reason, this is output:
The World Series of Slots Machine! It's Game Time!
How many tokens are you buying? 125
You have 125 tokens. Would you like to play? (y/n): y

[Norm]

if(play_question=="y"){
You should use the equals() method when comparing String objects, not the == operator.