Silver Archer Silver Archer - 6 months ago 4x
Java Question

How to display only the data which button was clicked ?

I was working on a Bakery Sales System project.
I separate the order page and payment page into two frame.
I want to display the data behind the button in the Payment frame from the Order frame only when the button is clicked.

Is there a way of doing it?

Here is my code for Order Page:

import java.text.DecimalFormat;
class Bun extends javax.swing.JFrame {
String decimal = "#.##";
DecimalFormat df = new DecimalFormat(decimal);
public final String [] bname = new String [] {"Tuna Sandwich","Garlic Bread","Redbean Bun","Sausage Bun","Chicken Burger","Ham Sandwich","Egg Mayo Bun","Chocolate Bread","Potato Bun"};
public final double [] bprice = new double [] {1.20, 2, 1.50, 2, 3, 2, 2, 1.50, 1.20};
public final double [] bsub = new double [] {0,0,0,0,0,0,0,0,0};
public double bsubtotal=0;

public Bun() {

private void BtnTunaSandwichActionPerformed(java.awt.event.ActionEvent evt) {
BtnTunaSandwich.setText(bname[1]+" - RM "+bprice[1]);

private void BtnGarlicBreadActionPerformed(java.awt.event.ActionEvent evt) {
BtnGarlicBread.setText(bname[2]+" - RM "+bprice[2]);

private void BtnRedbeanBunActionPerformed(java.awt.event.ActionEvent evt) {
BtnRedbeanBun.setText(bname[3]+" - RM "+bprice[3]);

private void BtnSausageBunActionPerformed(java.awt.event.ActionEvent evt) {
BtnSausageBun.setText(bname[4]+" - RM "+bprice[4]);

private void BtnChickenBurgerActionPerformed(java.awt.event.ActionEvent evt) {
BtnChickenBurger.setText(bname[5]+" - RM "+bprice[5]);

private void BtnHamSandwichActionPerformed(java.awt.event.ActionEvent evt) {
BtnHamSandwich.setText(bname[6]+" - RM "+bprice[6]);

private void BtnEggMayoBunActionPerformed(java.awt.event.ActionEvent evt) {
BtnEggMayoBun.setText(bname[7]+" - RM "+bprice[7]);

private void BtnChocolateBreadActionPerformed(java.awt.event.ActionEvent evt) {
BtnChocolateBread.setText(bname[8]+" - RM "+bprice[8]);

private void BtnPotatoBunActionPerformed(java.awt.event.ActionEvent evt) {
BtnPotatoBun.setText(bname[9]+" - RM "+bprice[9]);

private void numTunaSandwichActionPerformed(java.awt.event.ActionEvent evt) {
bsub[1] = Integer.parseInt(numTunaSandwich.getText())*bprice[1];

private void numGarlicBreadActionPerformed(java.awt.event.ActionEvent evt) {
bsub[2] = Integer.parseInt(numGarlicBread.getText())*bprice[2];

private void numRedbeanBunActionPerformed(java.awt.event.ActionEvent evt) {
bsub[3] = Integer.parseInt(numRedbeanBun.getText())*bprice[3];

private void numSausageBunActionPerformed(java.awt.event.ActionEvent evt) {
bsub[4] = Integer.parseInt(numSausageBun.getText())*bprice[4];

private void numChickenBurgerActionPerformed(java.awt.event.ActionEvent evt) {
bsub[5] = Integer.parseInt(numChickenBurger.getText())*bprice[5];

private void numHamSandwichActionPerformed(java.awt.event.ActionEvent evt) {
bsub[6] = Integer.parseInt(numHamSandwich.getText())*bprice[6];

private void numEggMayoBunActionPerformed(java.awt.event.ActionEvent evt) {
bsub[7] = Integer.parseInt(numEggMayoBun.getText())*bprice[7];

private void numChocolateBreadActionPerformed(java.awt.event.ActionEvent evt) {
bsub[8] = Integer.parseInt(numChocolateBread.getText())*bprice[8];

private void numPotatoBunActionPerformed(java.awt.event.ActionEvent evt) {
bsub[9] = Integer.parseInt(numPotatoBun.getText())*bprice[9];

public void Calculatetotalb(){
for(double i : bsub){
bsubtotal += i;

I haven't write anything yet in the Payment frame.
But here is my order frame looks like:

Order Frame

And here is my payment frame looks like :

Payment frame

I want to display the data into that Jlist.
Please help, thanks a lot.


well transferring data from one frame to another is nothing but exchanging data between objects. first thing you need to do is implement a method inside PaymentFrame which will accept data and change the list

class PaymentFrame{

public void setData(String list){
//get the list from the method and update the jlist


and the next step is to call this method from another class inyour case Orderframe

class orderFrame{
paymentframe pay; 
public void sendData(String data){
pay = new paymentframe();


here is an example of doing what you have asked bt if you have already opened a PaymentFrame in your project you should access the same object from the order frame.