在JDK 1.3中EXIT_ON_CLOSE选项出现之前,当关闭主框架的时候,程序员必须手工地退出程序。在正规的程序中,往往希望用户在确认没有丢失所做工作之后再关闭程序。 例如,当用户关闭框架时,可能希望弹出一个对话框来警告用户没有保存的工作有可能会丢失,只有在用户确认之后才退出程序。 当程序用户试图关闭一个框架窗口时,J...
Java Card What's New in Java Learn more: The world's premier developer conference for the Java community Learn more: Introducing Java SE 24 Learn more about the OpenJDK Project Explore More Java Newsletter Inside Java Podcast Attend an event...
importjavax.swing.*;publicclassMyWindowextendsJFrame{publicMyWindow(){setDefaultCloseOperation(JFrame.DO_NOTHING_ON_CLOSE);addWindowListener(newWindowAdapter(){publicvoidwindowClosing(WindowEvente){intoption=JOptionPane.showConfirmDialog(MyWindow.this,"确定关闭窗口吗?","确认关闭",JOptionPane.YES_NO_OPTION...
setDefaultCloseOperation ( WindowConstants . DO_NOTHING_ON_CLOSE ); 框架。addWindowListener (newWindowAdapter () {@OverridepublicvoidwindowClosing( WindowEvent e ){// 在终止程序之前请求确认intoption = JOptionPane . showConfirmDialog ( frame ,"您确定要关闭应用程序吗?","关闭确认", JOptionPane 。YES...
importjavax.swing.JFrame;importjava.awt.event.WindowAdapter;importjava.awt.event.WindowEvent;publicclassCloseWindowExample{publicstaticvoidmain(String[]args){JFrameframe=newJFrame("Close Window Example");frame.setSize(300,200);frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);// 设置默认关闭操作fr...
The local attribute on the ref/idref element is no longer supported in the 4.0 beans XSD, ...
Netty 里的 EventLoopGroup.shutdownGracefully/shutdown - 关闭线程池等资源 Reddsion 里的 Redisson.shutdown - 关闭连接池的连接,销毁各种资源 Apache HTTPClient 里的 CloseableHttpClient.close - 关闭连接池的连接,关闭 Evictor 线程等 这些主流的成熟框架,都会给你提供一个优雅关闭的方法,保证你在调用关闭之后,...
(timePanel);this.setDefaultCloseOperation(EXIT_ON_CLOSE);this.setSize(newDimension(200,70));this.setLocationRelativeTo(null);}publicvoidrun(){while(true){SimpleDateFormat dateFormatter=newSimpleDateFormat(DEFAULT_TIME_FORMAT);displayArea.setText(dateFormatter.format(Calendar.getInstance().getTime())...
at com.aliyun.oss.event.ProgressInputStream.close(ProgressInputStream.java:147) at java.io.FilterInputStream.close(FilterInputStream.java:181) at samples.HelloOSS.main(HelloOSS.java:39) 原因是两次读取数据间隔时间超过1分钟。OSS会关闭超过1分钟没有发送或接收数据的连接。
import java.awt.event.ActionEvent;import java.awt.event.ActionListener;public class MyWindow extends JFrame { public MyWindow() { setTitle("My Window");setSize(400, 300);setLocationRelativeTo(null);setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);JButton button = new JButton("Click me!");but...