以下是店铺分享给大家的如何用Java创建一个简单的Swing应用程序,希望大家喜欢! 先给出一段代码,这是一个很简单的Swing程序,然后在对程序内容作详细讲述。 A simple Swing program 1 import javax.swing.*; 2 import java.awt.*; 3 public class SwingDemo{ 4 public SwingDemo()
import javax.swing.JFrame; /** * 简单的swing窗体 * @author lenovo * */ public class HelloSwing { public static void main(String[] args) { JFrame frame=new JFrame("hello Swing"); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); frame.setSize(300,200); frame.setVisible(true); }...
import javax.swing.JFrame; /** * 简单的swing窗体 * @author lenovo * */ public class HelloSwing { public static void main(String[] args) { JFrame frame=new JFrame("hello Swing"); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); frame.setSize(300,200); frame.setVisible(true); }...
import java.awt.*; import java.awt.event.*; import javax.swing.*; public class ButtonDemo implements ActionListener{ JTextField tf; // tf是ButtonDemo类的成员变量 public void actionPerformed(ActionEvent e) { String name = ((JButton)e.getSource()).getText(); tf.setText("Button " + name +...
Swing is a cross-platform user-interface toolkit to build desktop applications with Java and is packaged with the Java SDK. Build a user interface with different look-and-feels for any platform including macOS, Windows, and Linux. With the efficiency of multithreading, Swing can integrate with ...
Example of Swing program in Java using Inheritance Java importjavax.swing.*; publicclassSimple2extendsJFrame{//inheriting JFrame JFrame f; Simple2(){ JButton b =newJButton("click");//create button b.setBounds(130,100,100,40); add(b);//adding button on frame ...
You can use a simple program we provide, called HelloWorldSwing, that brings up the GUI shown in the figure below. The program is in a single file, HelloWorldSwing.java. When you save this file, you must match the spelling and capitalization of its name exactly. The HelloWorldSwing.java ...
许多Swing程序没有在事件分派线程中初始化用户界面。在主线程中完成初始化是通常采用的方式。 所以写成这种方式也行 1 2 3 4 5 publicstaticvoidmain(String[] args) { SimpleFrame frame =newSimpleFrame(); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); ...
Java Swing message dialogs Message dialogs are simple dialogs that provide information to the user. Message dialogs are created with theJOptionPane.showMessageDialog()method. com/zetcode/MessageDialogsEx.java package com.zetcode; import javax.swing.GroupLayout; ...
答:可以继承其他类或实现其他接口,在Swing编程和Android开发中常用此方式来实现事件监听和回调。 35、内部类可以引用它的包含类(外部类)的成员吗?有没有什么限制? 答:一个内部类对象可以访问创建它的外部类对象的成员,包括私有成员。 36、Java 中的final关键字有哪些用法? 答: (1)修饰类:表示该类不能被继承;...