如何僅顯示單擊哪個按鈕的數據？

Question

我當時正在做一個面包店銷售系統項目。 我將訂單頁面和付款頁面分為兩個框架。 我想僅在單擊按鈕時才在“訂單”框架的“付款”框架中顯示按鈕后面的數據。

有辦法嗎？

這是我的訂單頁面代碼：

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() {
    initComponents();
}

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;
    }
}

我尚未在“付款”框中寫任何內容。 但是這是我的訂單框架，如下所示：

這是我的付款方式：

我想將數據顯示到該Jlist中。 請幫助，非常感謝。

Answer 1

很好地將數據從一幀傳輸到另一幀無非是在對象之間交換數據。 您需要做的第一件事是在PaymentFrame中實現一個方法，該方法將接受數據並更改列表

class PaymentFrame{

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

}

下一步是在您的案例Orderframe中從另一個類調用此方法

class orderFrame{
paymentframe pay; 
public void sendData(String data){
if(pay==null){
pay = new paymentframe();
 }    
pay.setdata(data);
pay.setvisible(true);
}

}

這是一個示例，如果您已經在項目中打開了PaymentFrame，請執行bt的操作，您應該從訂單框架訪問相同的對象。