简单的图形界面

[java]代码库

package day01;
import javax.swing.ButtonGroup;
import javax.swing.JCheckBox;
import javax.swing.JComboBox;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JRadioButton;
public class TestSelectDemo {
	public static void main(String[] args) {
		// TODO Auto-generated method stub
		JFrame frame = new TestSelectFrame();
		frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		frame.setVisible(true);
	}
}
class TestSelectFrame extends JFrame {
	public TestSelectFrame(){
		setTitle("测试单选按钮、复选框和下拉列表");
		setSize(400,100);
		TestSelectPanel tsp  =new TestSelectPanel();
		add(tsp);
	}
}
class TestSelectPanel extends JPanel{
	public TestSelectPanel(){
		JCheckBox jcb1 = new JCheckBox("Java");
		JCheckBox jcb2 = new JCheckBox("#");
		JCheckBox jcb3 = new JCheckBox("C++");
		add(jcb1);
		add(jcb2);
		add(jcb3);
		
		ButtonGroup group = new ButtonGroup();
		JRadioButton b1= new JRadioButton("男");
		JRadioButton b2= new JRadioButton("女");
		group.add(b1);
		group.add(b2);
		add(b1);
		add(b2);
		JComboBox jcb = new JComboBox();
		jcb.addItem("计算机");
		jcb.addItem("医学");
		jcb.addItem("英语");
		add(jcb);
		}
}