?? textdisplay.java
字號(hào):
package com.javapatterns.observer.mvc;
/*
* This example is from javareference.com
* for more information visit,
* http://www.javareference.com
*/
//import statements
import java.awt.*;
import java.util.*;
/**
* TextDisplay.java
* This class demonstrates the use of Observer Pattern
* This class represents the Text View Object and implements
* Observer interface
*
* @author Rahul Sapkal(rahul@javareference.com)
*/
public class TextDisplay extends TextField implements Observer
{
private String m_text;
//Constructor
public TextDisplay(String text)
{
super(text);
m_text = text;
}
//update method called when notified by the Observable
public void update(Observable o, Object arg)
{
setText(m_text + ((Data)o).getData());
}
}
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