user input program

hi
im new to java and i have a question about the following program. basically, i want to get the user input and show and output on the screen, however, the input dialogue doesn't show and i dont know why??

Code:

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package math;

import javax.swing.JOptionPane;

public class NewClass {
    int PIN = 1234;
    double account_number;
    double beg_bal = 1000.0;
    String user_name;
    public static void main (String[] args){
        new NewClass();
    }
    public double deposit(String amount){
        double a;
        amount = JOptionPane.showInputDialog("Enter the amount to deposit: ");
        a = Double.parseDouble(amount);
        beg_bal = beg_bal + a;
        System.out.println("Your new balance is:\n");
        JOptionPane.showMessageDialog(null,"Your new balance is:"+ beg_bal,"Results",JOptionPane.PLAIN_MESSAGE);
        System.exit(0);
        return (beg_bal);
    }
    public double withd_transfer(String amount){
        double b;
        amount = JOptionPane.showInputDialog("Enter the amount to withdraw/transfer: ");
        b = Double.parseDouble(amount);
        beg_bal = beg_bal + b;
        System.out.println("Your new balance is:\n");
        return (beg_bal);
    }
   
    }

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thanks in advance

Where do you call the deposit or withd_transfer methods? Your main only calls the NewClass constructor -- where's you code for that?

all your code does is create a NewClass (please use better names in future) object and then ends. When do you call any methods?

Quote:

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Originally Posted by Fubarable

Where do you call the deposit or withd_transfer methods? Your main only calls the NewClass constructor -- where's you code for that?

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I want to call these methods by prompting the user, but should I call these methods inside the main function in order to do that?

You would call them in the most appropriate location. You need to decide where that is.