[英]how do i get a object that has been created from a jdialog class to be use in another jdialog class
我創建了3個TourAgency類,addTourAgency Jdialog類和addGuide Jdialog類
TourAgency類
public class TourAgency
{
...
public TourAgency() {
this("Not set", "Not set");
}
public TourAgency(String inAgencyName, String inAgencyLocation)
{
setAgencyName(inAgencyName);
setAgencyLocation(inAgencyLocation);
}
addTourAgency類(創建代理商的代碼)
public class addTAJD extends JDialog{
...
private TourAgency ta1;
okBtn.addActionListener(new ActionListener(){
public void actionPerformed(ActionEvent ae)
{
String name = nameTF.getText().trim();
String location = locationTF.getText().trim();
ta1 = new TourAgency(name, location);
...
setVisible(false);
JOptionPane.showMessageDialog(null, ta1.getAgencyName() + " is created");
}
});
addGuide類(檢查代理是否缺失的代碼部分)
public class AddNGuideJD extends JDialog{
private JLabel name, idNumber, salary, extra;
private JTextField nameTF, idNumberTF, salaryTF, extraTF;
private JButton okBtn, resetBtn, cancelBtn;
private Guide guide;
private TourAgency ta1;
okBtn.addActionListener(new ActionListener(){
public void actionPerformed(ActionEvent ae)
{
if(ta1 != null)
{
...
}
else
{
JOptionPane.showMessageDialog(null, "Please add a Tour Agency to countinue");
}
}
});
因此,我的問題是,當我在addTourAgency類中創建旅行社並單擊addGuide類中的on按鈕時,為什么它總是彈出表示未創建旅行社的消息?(((JOptionPane.showMessageDialog(null,“請向國家添加旅行社“);)。我錯過了什么嗎?如何使用已經創建的對象?
使用getter和setter。
在創建AgencyTour的JDialog中,創建一個getAgencyTour
函數,在下一個JDialog中,創建一個setAgencyTour
函數,以傳遞上一個函數的結果。
您還可以將創建的AgencyTour從addTAJD
作為參數傳遞給AddNGuideJD的構造AddNGuideJD
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