borderlayoutdemo.java

来自「java2参考大全上的例子的源码和自己的理解.」· Java 代码 · 共 30 行

import java.awt.*;
import java.applet.*;
import java.util.*;

public class BorderLayoutDemo extends Applet
{
   public void init()
   {
      //A border layout lays out a container, arranging and resizing its components to fit in five regions:
      //north, south, east, west, and center. Each region may contain no more than one component,
      //and is identified by a corresponding constant: NORTH, SOUTH, EAST, WEST, and CENTER.
      //When adding a component to a container with a border layout, use one of these five constants,
      //for example:     Panel p = new Panel();
      //p.setLayout(new BorderLayout());
      //p.add(new Button("Okay"), BorderLayout.SOUTH);
      setLayout(new BorderLayout());

      add(new Button("This is arross the top"),
              BorderLayout.NORTH);
      add(new Label("The message is on the bottom"),
              BorderLayout.SOUTH);
      add(new Button("Left"),BorderLayout.WEST);
      add(new Button("Right"),BorderLayout.EAST);
      String message="This is the message in the Center!";
      add(new TextArea(message),BorderLayout.CENTER);
   }
}