1、按钮JButton
public class Demo extends JFrame {
public Demo() {
setBounds(100, 100, 400, 200);
setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
Container c = getContentPane();
c.setLayout(new GridLayout(2, 3, 10, 10));
JButton btn[] = new JButton[6];//定义6个按钮数组
for (int i = 0; i < btn.length; i++) {
btn[i] = new JButton();//创建按钮
c.add(btn[i]);
}
btn[0].setText("不可用");
btn[0].setEnabled(false);
btn[1].setText("背景色");
btn[1].setBackground(Color.GREEN);
btn[2].setText("无边框");
btn[2].setBorderPainted(false);
btn[3].setText("有边框");
btn[3].setBorder(BorderFactory.createLineBorder(Color.RED));
setVisible(true);
Icon icon=new ImageIcon("src/logo.png");
btn[4].setIcon(icon);//给按钮设置图片
btn[4].setToolTipText("图片按钮");//鼠标悬停提示
btn[5].setText("弹出提示框");
btn[5].addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
JOptionPane.showMessageDialog(Demo.this,"这是消息提示框");
}
});
}
public static void main(String[] args) {
new Demo();
}
}2、单选按钮JRadioButton
public class Demo extends JFrame {
public Demo() {
setBounds(100, 100, 200, 100);
setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
Container c = getContentPane();
c.setLayout(new FlowLayout());
JRadioButton rb1 = new JRadioButton("男");
JRadioButton rb2 = new JRadioButton("女");
c.add(rb1);
c.add(rb2);
ButtonGroup group=new ButtonGroup();//按钮组，使按钮单选，而不被同时选中
group.add(rb1);
group.add(rb2);
rb1.setSelected(true);//默认选中
setVisible(true);
}
public static void main(String[] args) {
new Demo();
}
}3、复选框JCheckBox
public class Demo extends JFrame {
public Demo() {
setBounds(100, 100, 200, 100);
setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
Container c = getContentPane();
c.setLayout(new FlowLayout());
JCheckBox cb1=new JCheckBox("桔子");
JCheckBox cb2=new JCheckBox("苹果");
JCheckBox cb3=new JCheckBox("香蕉");
cb1.setSelected(true);//默认选中
c.add(cb1);c.add(cb2);c.add(cb3);
setVisible(true);
}
public static void main(String[] args) {
new Demo();
}
}