HSRP VRRP,GLBP的比较

GridBagLayout布局可以随窗口大小调整位置。
import java.awt.*;
import java.applet.Applet;

public class GridBagEx1 extends Applet {

protected void makebutton(String name,
GridBagLayout gridbag,
GridBagConstraints c) {
Button button = new Button(name);
gridbag.setConstraints(button, c);
add(button);
}

public void init() {
GridBagLayout gridbag = new GridBagLayout();
GridBagConstraints c = new GridBagConstraints();
setFont(new Font("SansSerif", Font.PLAIN, 14));
setLayout(gridbag);

c.fill = GridBagConstraints.BOTH;
c.weightx = 1.0;
makebutton("Button1", gridbag, c);
makebutton("Button2", gridbag, c);
makebutton("Button3", gridbag, c);

c.gridwidth = GridBagConstraints.REMAINDER; //end row
makebutton("Button4", gridbag, c);

c.weightx = 0.0; //reset to the default
makebutton("Button5", gridbag, c); //another row

c.gridwidth = GridBagConstraints.RELATIVE; //next-to-last in row
makebutton("Button6", gridbag, c);

c.gridwidth = GridBagConstraints.REMAINDER; //end row
makebutton("Button7", gridbag, c);

c.gridwidth = 1; //reset to the default
c.gridheight = 2;
c.weighty = 1.0;
makebutton("Button8", gridbag, c);

c.weighty = 0.0; //reset to the default
c.gridwidth = GridBagConstraints.REMAINDER; //end row
c.gridheight = 1; //reset to the default
makebutton("Button9", gridbag, c);
makebutton("Button10", gridbag, c);
makebutton("Button11", gridbag, c);
makebutton("Button12", gridbag, c);

setSize(400, 200);
}

public static void main(String args[]) {
Frame f = new Frame("GridBag Layout Example");

GridBagEx1 ex1 = new GridBagEx1();
ex1.init();
f.add("Center", ex1);
f.pack();
f.setSize(f.getPreferredSize());
f.show();
}
}