lele_pipi

将META-INF文件中的MANIFEST.MF文件用txt打开里面有Manifest-Version: 1.0加上Main-Class: 类名（有包名时加上包名.类名）例如：Main-Class: line

关于ButtonGroup和JRadioButton的应用import java.awt.*;import javax.swing.*;public class JRadioButtonTest extends ButtonGroup{ JRadioButtonTest(){ JFrame f = new JFrame("单选框示例");//创建一个JFrame的对象 C

复选框（JCheckBox）的应用import java.awt.*;import javax.swing.*;class Favorite extends JPanel{ JCheckBox sport, computer, music, read; Favorite(){ sport = new JCheckBox("运动"); computer = new JChec