JFrameframe=newJFrame("Radio Button Example");frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);frame.setSize(300,200);frame.setLayout(newFlowLayout()); 1. 2. 3. 4. 2. 添加JRadioButtons 接下来,我们添加几个JRadioButtons到窗口中,代码如下: JRadioButtonradioButton1=newJRadioButton("Option...
在Java Swing 中,可以使用JRadioButton类来创建单选按钮。下面是一个简单的示例: importjavax.swing.*;importjava.awt.*;publicclassRadioButtonExample{publicstaticvoidmain(String[]args){JFrameframe=newJFrame("单选按钮示例");frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);JPanelpanel=newJPanel();pan...
接下来,笔者通过一个完整的案例来演示下JRadioButton单选按钮组件的基本用法: importjavax.swing.*;importjava.awt.*;importjava.awt.event.*;publicclassRadioButtonExample{publicstaticvoidmain(String[]args){JFrameframe=newJFrame("单选按钮示例");frame.setLayout(newFlowLayout());JRadioButtonradioButton1=new...
单选按钮(JRadioButton)的功能与单选框相似。使用单选按钮的方法是将一些单选按钮用ButtonGroup对象分组,使同一组的单选按钮只允许有一个被选中。单选按钮与单选框的差异是显示的样式不同,单选按钮是一个圆形的按钮,单选框是一个小方框。 JRadioButton类的常用构造方法有以下几个: ...
Click the right button. It enables the middle button and the left button, and disables itself. As theButtonDemoexample shows, a Swing button can display both text and an image. InButtonDemo, each button has its text in a different place, relative to its image. The underlined letter in ea...
Example: Handling a Button Click Becoming Comfortable with Inner Classes Creating Listeners Containing a Single Method Call Example: Changing the Look and Feel Adapter Classes Actions Mouse Events The AWT Event Hierarchy Semantic and Low-Level Events 9 USER INTERFACE COMPONENTS WITH SWING Swing and the...
工作后可以再学习提升的技术：JDK8-15新特性 → 编程强化 → 数据库强化 → 安全框架SpringSecurity →...
8.1.1 Example: Handling a Button Click 386 8.1.2 Becoming Comfortable with Inner Classes 391 8.1.3 Creating Listeners Containing a Single Method Call 394 8.1.4 Example: Changing the Look-and-Feel 395 8.1.5 Adapter Classes 399 8.2 Actions 403 8.3 Mouse Events 411 8.4 ...
65.下列程序的运行结果是: public class Example{ String str=new String("good"); char[]ch={'a','b','c'}; public static void main(String args[]){ Example ex=new Example(); ex.change(ex.str,ex.ch); System.out.print(ex.str+" and "); Sytem.out.print(ex.ch); } ...