Question

用Eclipse编Java提示The method show() from the type Window is deprecated，并且窗口没有出现

import java.awt.*;

import java.awt.event.*;

import javax.swing.*;

public class firstclass implements ActionListener, WindowListener

{

public firstclass()

{

JFrame f = new JFrame("EventDemo1");

Container contentPane = f.getContentPane();

JButton b = new JButton("按我有声音喔");

b.addActionListener(this);

contentPane.add(b);

f.pack();

f.show();///////////////////////////////////The method show() from the type Window is deprecated

f.addWindowListener(this);

}

public static void main(String args[])

{

new firstclass();

}

public void actionPerformed(ActionEvent e)

{

Toolkit.getDefaultToolkit().beep();

}

public void windowActivated(WindowEvent e){}

public void windowClosed(WindowEvent e){}

public void windowOpened(WindowEvent e){}

public void windowDeactivated(WindowEvent e){}

public void windowIconified(WindowEvent e){}

public void windowDeiconified(WindowEvent e){}

public void windowClosing(WindowEvent e){}

{

System.exit(0);

}

}

Answer 1

这个方法已经不建议被使用了，使用另外的方式去实现。

追问

那应该用什么语句来代替实现同样的功能呢？是不是因为这条语句导致窗口未被创建或显示啊？

已经找到替代语句，应将 f.show(); 改为 f.setVisible(true); 就好了!

Answer 2

deprecated方法没问题，错误不在这， 我用show可以显现，你的问题， 一定在别的地方！