Trouble updating variables

Question

Hi guys,
This is proabably a really easy answer that i'm missing, but I've been staring at this code for several hours now, and am not making much progress. It is suppossed to be a simple game of craps. I am having trouble getting the variable amount to update. Here are the bits of the code dealing with amount. Please let me know if you need anything else.
Also, I know the code is really messy, I just started learning java, and am still trying to wrap my head around the basics. Any suggestions you have would be appreciated.
public void begin(String name, int amount, final int GOAL){//start begin method
     getBet(amount); //calls the method to get the player's bet
     playGame(bet, amount);
     dispMessage(win, bet, amount, name);
     System.exit(1);
} // end begin method
public void getBet(int amount){//start getBet
    JOptionPane.showMessageDialog(null,"You currently have "+amount+
    " dollars.  Your goal is 300 dollars.", "Current Money", JOptionPane.INFORMATION_MESSAGE);//tells player current amount of money and the goal they are trying to reach
          String input = JOptionPane.showInputDialog (null,        //prompts for the amount of the bet
       "Please enter the amound you wish to bet",
       "Place Bet", JOptionPane.QUESTION_MESSAGE);
        bet = Integer.parseInt(input);
     if(bet>amount) //error checks the bet amount
     JOptionPane.showMessageDialog(null, "You do not have enough money to place that bet. Please enter another amount.",
     "Error Message", JOptionPane.ERROR_MESSAGE);
     getBet(amount);
else
     return;     
     }//end method getBet
private void dispMessage(boolean win, int bet, int amount, String name) {
     if (win == true){          
         winBet(bet, amount);
          JOptionPane.showMessageDialog(null, ""+name+" you won "+bet+
          " dollars. You now have "+(amount)+ " dollars.   To play again, press enter", "Winner", JOptionPane.INFORMATION_MESSAGE);
          playGame(bet, amount);
     else
          if((win == false)&&(amount>=0)){
         loseBet(bet, amount);
          JOptionPane.showMessageDialog(null, "You lost the game. You now have "+amount+
          ". To play again, press enter.", "Loser", JOptionPane.INFORMATION_MESSAGE);
          playGame(bet, amount);
     else
     JOptionPane.showMessageDialog(null, "You are out of money", "Loser", JOptionPane.INFORMATION_MESSAGE);
     playGame(bet, amount);
     }//end dispMessage method
     public int winBet(int bet, int amount){//start winBet method
               amount = amount +bet;
               return amount;
               }//end winBet method
     public int loseBet(int bet, int amount){//start loseBet method
               amount = amount-bet;
               return amount;
                    }//end loseBet method
     class DicePlayer{// DicePlayer class
    String name = JOptionPane.showInputDialog (null,//prompts for the amount of the bet
       "Please enter your name",
       "Enter Name", JOptionPane.QUESTION_MESSAGE);
    int amount = 100;//player starts with 100 dollars
    final int GOAL = 300;  //player needs to reach 300 dollars          
} //end of DicePlayer class
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Answer 1

And to help you one step further (feeling generous), make your
winBet method like this:
private int winBet(int bet, int amount){
    return amount + bet;
}then the call the jfbriere gave you will work.
amount = winBet(bet, amount);
But maybe you figured all this out already?