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import java.awt.*;
import javax.swing.*;

public class coffee
{
private JFrame f;
private JButton b1, b2, b3;
private JTextArea tNum1, tNum2, tNum3, tNum4;
private...

i have a project.it's a coffee shop program using jar please help on how to do it.

the project is all about doing a coffee shop using jar...i dont know how to do the buttons etc and the implementation T_T