import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
public class BorderTest
{
public static void main(String[] arguments)
{
BorderFrame Bor=new BorderFrame();
Bor.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
Bor.setVisible(true);
}
}
class BorderFrame extends Frame
{
public BorderFrame()
{
setSize(240,280);
setTitle("BorderTest");
setLayout(new BorderLayout());
BorderPanel BP=new BorderPanel();
add(BP);
pack();
}
}
class BorderPanel extends Panel
{
public BorderPanel()
{
north = new JButton("noth");
south = new JButton("south");
east = new JButton("east");
west = new JButton("west");
center = new JButton("Center");
add(south,BorderLayout.SOUTH);
add(east,BorderLayout.EAST);
add(west,BorderLayout.WEST);
add(north,BorderLayout.NORTH);
add(center,BorderLayout.CENTER);
}
JButton north,south,west,east,center;
}我是要在五个方向显示五个按钮,可这外程序显示在一条上,不能实现我的效果,请高手,该怎么该?
import java.awt.event.*;
import javax.swing.*;
public class BorderTest
{
public static void main(String[] arguments)
{
BorderFrame Bor=new BorderFrame();
Bor.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
Bor.setVisible(true);
}
}
class BorderFrame extends Frame
{
public BorderFrame()
{
setSize(240,280);
setTitle("BorderTest");
setLayout(new BorderLayout());
BorderPanel BP=new BorderPanel();
add(BP);
pack();
}
}
class BorderPanel extends Panel
{
public BorderPanel()
{
north = new JButton("noth");
south = new JButton("south");
east = new JButton("east");
west = new JButton("west");
center = new JButton("Center");
add(south,BorderLayout.SOUTH);
add(east,BorderLayout.EAST);
add(west,BorderLayout.WEST);
add(north,BorderLayout.NORTH);
add(center,BorderLayout.CENTER);
}
JButton north,south,west,east,center;
}我是要在五个方向显示五个按钮,可这外程序显示在一条上,不能实现我的效果,请高手,该怎么该?
{
super(new BorderLayout());
....
我在BorderFrame 里设置setLayout(new BorderLayout());为什么不行?请解释!
这是为什么?
setDefaultCloseOperation()方法是JFrame类里的方法
Frame 默认的布局是 BorderLayout ,Panel默认是 FlowLayout