transferfocuslistener.java

这是一个关于电表的收费器的代码程序

package edu.njust.cs;
import java.awt.event.*;
import javax.swing.*;
public class TransferFocusListener implements ActionListener{
	public void actionPerformed(ActionEvent e){
		Object s=e.getSource();
		if(s instanceof JComponent)	((JComponent)s).transferFocus();
	}
}