//: Buttons.java
// Various Swing buttons
package c13.swing;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.plaf.basic.*;
import javax.swing.border.*;

public class Buttons extends JPanel {
JButton jb = new JButton("JButton");
BasicArrowButton
up = new BasicArrowButton(
BasicArrowButton.NORTH),
down = new BasicArrowButton(
BasicArrowButton.SOUTH),
right = new BasicArrowButton(
BasicArrowButton.EAST),
left = new BasicArrowButton(
BasicArrowButton.WEST);
public Buttons() {
add(jb);
add(new JToggleButton("JToggleButton"));
add(new JCheckBox("JCheckBox"));
add(new JRadioButton("JRadioButton"));
JPanel jp = new JPanel();
jp.setBorder(new TitledBorder("Directions"));
jp.add(up);
jp.add(down);
jp.add(left);
jp.add(right);
add(jp);
}
public static void main(String args[]) {
Show.inFrame(new Buttons(), 300, 200);//这段代码是什么意思？我看不明白，在Jcreator上面我也运行不了，报错，请高手指点
}
} ///:~