/**
* @(#)GUI.java
*
* GUI application
*
* @author
* @version 1.00 2008/9/2
*/
import java.awt.*;
import javax.swing.*;
import java.awt.event.*;
import java.applet.*;
class TextAreaDemo extends Frame
{
Box b1=Box.createVerticalBox();
Box b2=Box.createVerticalBox();
public TextAreaDemo()
{
TextField tf_name=new TextField(10);
TextField tf_pwd=new TextField(10);
Label l_name=new Label("name:");
Label l_pwd=new Label("password:");
// b1.add(l_name);
// b1.add(l_pwd);
// b2.add(tf_name);
// b1.add(Box.createVerticalStrut(9));
// b2.add(tf_pwd);
// b1.add(Box.createVerticalStrut(9));
// add(b1);
// add(b2);
Panel box1=new Panel();
Panel box2=new Panel();
box1.setBackground(Color.red);
box1.add(l_name);
box1.add(tf_name);
add(box1);
box2.add(l_pwd);
box2.add(tf_pwd);
add(box2);
}
}
public class GUI {
public static void main(String[] args)
{
int width=200,height=300;
TextAreaDemo tad=new TextAreaDemo();
tad.setSize(width,height);
tad.setLocation(30,40);
tad.setMaximumSize(new Dimension(width*3,height*2));
tad.show();
tad.addWindowListener(new WindowAdapter()
{
public void windowClosing(WindowEvent we)
{
System.exit(1);
}
});
}
}
为什么只显示box1呢?
* @(#)GUI.java
*
* GUI application
*
* @author
* @version 1.00 2008/9/2
*/
import java.awt.*;
import javax.swing.*;
import java.awt.event.*;
import java.applet.*;
class TextAreaDemo extends Frame
{
Box b1=Box.createVerticalBox();
Box b2=Box.createVerticalBox();
public TextAreaDemo()
{
TextField tf_name=new TextField(10);
TextField tf_pwd=new TextField(10);
Label l_name=new Label("name:");
Label l_pwd=new Label("password:");
// b1.add(l_name);
// b1.add(l_pwd);
// b2.add(tf_name);
// b1.add(Box.createVerticalStrut(9));
// b2.add(tf_pwd);
// b1.add(Box.createVerticalStrut(9));
// add(b1);
// add(b2);
Panel box1=new Panel();
Panel box2=new Panel();
box1.setBackground(Color.red);
box1.add(l_name);
box1.add(tf_name);
add(box1);
box2.add(l_pwd);
box2.add(tf_pwd);
add(box2);
}
}
public class GUI {
public static void main(String[] args)
{
int width=200,height=300;
TextAreaDemo tad=new TextAreaDemo();
tad.setSize(width,height);
tad.setLocation(30,40);
tad.setMaximumSize(new Dimension(width*3,height*2));
tad.show();
tad.addWindowListener(new WindowAdapter()
{
public void windowClosing(WindowEvent we)
{
System.exit(1);
}
});
}
}
为什么只显示box1呢?
import javax.swing.*;
import java.awt.event.*;
import java.applet.*;class TextAreaDemo extends Frame { Box b1 = Box.createVerticalBox();
Box b2 = Box.createVerticalBox(); public TextAreaDemo() {
TextField tf_name = new TextField(10);
TextField tf_pwd = new TextField(10);
Label l_name = new Label("name:");
Label l_pwd = new Label("password:");
// b1.add(l_name);
// b1.add(l_pwd);
// b2.add(tf_name);
// b1.add(Box.createVerticalStrut(9));
// b2.add(tf_pwd);
// b1.add(Box.createVerticalStrut(9));
// add(b1);
// add(b2);
Panel box1 = new Panel();
Panel box2 = new Panel();
box1.setBackground(Color.red);
box1.add(l_name);
box1.add(tf_name);
add(box1,BorderLayout.SOUTH);
box2.add(l_pwd);
box2.add(tf_pwd);
add(box2,BorderLayout.CENTER);
}
}public class Main { public static void main(String[] args) {
int width = 200, height = 300;
TextAreaDemo tad = new TextAreaDemo();
tad.setSize(width, height);
tad.setLocation(30, 40);
tad.setMaximumSize(new Dimension(width * 3, height * 2));
tad.show();
tad.addWindowListener(new WindowAdapter() { public void windowClosing(WindowEvent we) {
System.exit(1);
}
}); }
}
不指定具体位置当然覆盖了。
import javax.swing.*;
import java.awt.event.*;
import java.applet.*;
class TextAreaDemo extends Frame
{
/**
*
*/
private static final long serialVersionUID = 1L;
Box b1=Box.createVerticalBox();
Box b2=Box.createVerticalBox();
public TextAreaDemo()
{
TextField tf_name=new TextField(10);
TextField tf_pwd=new TextField(10);
Label l_name=new Label("name:");
Label l_pwd=new Label("password:");
// b1.add(l_name);
// b1.add(l_pwd);
// b2.add(tf_name);
// b1.add(Box.createVerticalStrut(9));
// b2.add(tf_pwd);
// b1.add(Box.createVerticalStrut(9));
// add(b1);
// add(b2);
this.setLayout(new BorderLayout()) ;
Panel box1=new Panel();
Panel box2=new Panel();
box1.setBackground(Color.red);
box1.add(l_name);
box1.add(tf_name);
add(box1,BorderLayout.NORTH);
box2.add(l_pwd);
box2.add(tf_pwd);
add(box2,BorderLayout.CENTER);
}
}
public class GUI {
public static void main(String[] args) {
int width=200,height=300;
TextAreaDemo tad=new TextAreaDemo();
tad.setSize(width,height);
tad.setLocation(30,40);
tad.setMaximumSize(new Dimension(width*3,height*2));
// tad.show();
tad.setVisible(true) ;
tad.addWindowListener(new WindowAdapter(){
public void windowClosing(WindowEvent we) {
System.exit(1);
}
});
}
}