[英]How do I access this keyword In a different class
am having a problem trying to access this keyword in a different class using Java programming.尝试使用 Java 编程在不同的类中访问此关键字时遇到问题。 I have tried Context, class.this but no help yet...我已经尝试过 Context, class.this 但还没有帮助......
I have created a project using NetBeans gui builder, I want when i click button the form to get disposed...我已经使用 NetBeans gui 构建器创建了一个项目,我希望当我单击表单按钮时进行处理...
Main class contains the click event for disposing the JFrame Form BestQSystems.java:主类包含用于处理 JFrame 表单 BestQSystems.java 的单击事件:
private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {
CloseWindow.closeWindow();
}
Class to close the JFrame: CloseWindow.java关闭 JFrame 的类:CloseWindow.java
import java.awt.Toolkit;
import java.awt.event.WindowEvent;
import javax.naming.Context;
/*
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* and open the template in the editor.
*/
/**
*
* @author Benson
*/
public class CloseWindow {
public static void closeWindow(){
WindowEvent widnowEvent = new WindowEvent(this, WindowEvent.WINDOW_CLOSING);
Toolkit.getDefaultToolkit().getSystemEventQueue().postEvent(widnowEvent);
}
}
Am having an error in this line WindowEvent widnowEvent = new WindowEvent(this, WindowEvent.WINDOW_CLOSING);
在这一行中出现错误WindowEvent widnowEvent = new WindowEvent(this, WindowEvent.WINDOW_CLOSING);
Please advise me on how to access this
keyword in a different class.请告诉我如何在不同的类中访问this
关键字。
You can pass a reference to this
to the other method.您可以将this
的引用传递给其他方法。 For example:例如:
BestQSystems.java最佳QSystems.java
private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {
CloseWindow.closeWindow(this);
}
and in the CloseWindow.java并在 CloseWindow.java
public class CloseWindow {
public static void closeWindow(BestQSystems ref){
WindowEvent widnowEvent = new WindowEvent(ref, WindowEvent.WINDOW_CLOSING);
}
}
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