Frame
那位高手能告诉我,我的 Frame 为什么非要在边框上鼠标拉动一下才能看到TextField
和 Button啊?
import java.awt.*;
import java.awt.event.*;
public class TestFrame extends Frame
{
TextField txt;
Button but;
public static void main(String[] args)
{
TestFrame TF = new TestFrame();
}
TestFrame()
{
super("我的Frame");
setLayout(new FlowLayout());
setSize(300,400);
setVisible(true);
txt = new TextField(20);
add(txt);
but = new Button("好好学习");
add(but);
addWindowListener(new cls());
}
class cls extends WindowAdapter
{
public void windowClosing(WindowEvent e)
{
System.exit(0);
}
}
}