eventtextfield.java

Java程序设计(美) David D. Riley著 机械工业出版社 书籍配套 代码

/** EventTextField class (abstract)
    Author: David Riley
    Date: May, 2004 */
import java.awt.event.*;
import javax.swing.JTextField;
public abstract class EventTextField extends JTextField implements ActionListener  {

    /** post:   a new text field is instantiated */
    public EventTextField()  {
    	super();
        addActionListener( this );
    }
    
    /* EVENT HANDLER - called in response to each scheduled event
			(This method is designed to be overridden.) */
    public void actionPerformed( ActionEvent e )  {
    }
    	
}