java代码实例第40课

test040.java

package pack02;

import java.awt.Container;
import java.awt.FlowLayout;
import java.awt.GridLayout;

import javax.swing.JButton;
import javax.swing.JCheckBox;
import javax.swing.JComboBox;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.WindowConstants;

public class test040 extends JFrame
{

  public static void main(String[] args)
  {
    new test040();

  }

  public test040()
  {
    this.setTitle("习题");
    this.setLayout(new GridLayout(3,1,5,5));
    Container container1 = this.getContentPane();
    String[] colors = new String[] {"红","绿","蓝"};
    JComboBox<String> comboBox1 = new JComboBox<>(colors);
    container1.add(comboBox1);

    JCheckBox checkBox1 = new JCheckBox("男");
    JCheckBox checkBox2 = new JCheckBox("女");
    JPanel panel1 = new JPanel(new FlowLayout());
    panel1.add(checkBox1);
    panel1.add(checkBox2);
    container1.add(panel1);

    JButton button1 = new JButton("确定");
    JButton button2 = new JButton("取消");
    JPanel panel2 = new JPanel(new FlowLayout());
    panel2.add(button1);
    panel2.add(button2);
    container1.add(panel2);

    this.setSize(500,300);
    this.setVisible(true);
    this.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);

  }
}