Question

关于Java的JFrame问题

我先初始化了一个JFrame A， 然后在JFrame A中新申请了一个JFrame B。
为什么当关闭B的时候，A也一起被关闭了？
怎样才能让A不被关闭？

Answer 1

import java.awt.Container;
import java.awt.Dimension;
import java.awt.FlowLayout;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;

import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JTextField;
import javax.swing.SwingUtilities;

public class WindowApplication extends JFrame {
public WindowApplication() {
initComponents();
}

private void initComponents() {
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setSize(200, 200);

Container container = getContentPane();
container.setLayout(new FlowLayout(FlowLayout.LEFT));

final JTextField textField = new JTextField(15);
textField.setPreferredSize(new Dimension(100, 20));

final JLabel label = new JLabel();

JButton button = new JButton("确定");

button.addMouseListener(new MouseAdapter() {
public void mouseClicked(MouseEvent e) {
if (e.getButton() == MouseEvent.BUTTON1) {
new MyWindow().setVisible(true);
}
}
});

container.add(textField);
container.add(button);
container.add(label);
}

public static void main(String[] args) {
SwingUtilities.invokeLater(new Runnable() {
public void run() {
new WindowApplication().setVisible(true);
}
});
}
}

class MyWindow extends JFrame{
public MyWindow() {
initComponents();
}

private void initComponents() {
// 主要是这句话
setDefaultCloseOperation(this.DISPOSE_ON_CLOSE);
setSize(200, 200);

Container container = getContentPane();
container.setLayout(new FlowLayout(FlowLayout.LEFT));

final JTextField textField = new JTextField(15);
textField.setPreferredSize(new Dimension(100, 20));

final JLabel label = new JLabel();

JButton button = new JButton("确定");

button.addMouseListener(new MouseAdapter() {
public void mouseClicked(MouseEvent e) {

}
});

container.add(textField);
container.add(button);
container.add(label);
}
}
这是一个例子

Answer 2

我也学习一下。

Answer 3

为什么加如了会员在网上查不到业绩