drawer.java

北大青鸟同学写的画板程序,可供新手学习.

package draw;

import java.awt.BorderLayout;
import java.awt.Dimension;

import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JMenuBar;
import javax.swing.JMenu;
import javax.swing.JMenuItem;
import javax.swing.JToolBar;
import java.awt.Rectangle;
import javax.swing.BorderFactory;
import java.awt.Color;
import javax.swing.border.Border;
import javax.swing.JButton;
import javax.swing.*;
import java.awt.SystemColor;

public class Drawer extends JFrame {
    JPanel contentPane;
    JMenuBar jMenuBar1 = new JMenuBar();
    JMenu jMenu1 = new JMenu();
    JMenuItem jMenuItem1 = new JMenuItem();
    JMenuItem jMenuItem2 = new JMenuItem();
    Border border1 = BorderFactory.createLineBorder(Color.white, 2);
    JButton jButton1 = new JButton();
    JPanel jPanel1 = new JPanel();
    public Drawer() {
        try {
            setDefaultCloseOperation(EXIT_ON_CLOSE);
            jbInit();
        } catch (Exception exception) {
            exception.printStackTrace();
        }
    }

    /**
     * Component initialization.
     *
     * @throws java.lang.Exception
     */
    private void jbInit() throws Exception {
        border1 = BorderFactory.createLineBorder(Color.lightGray, 2);
        contentPane = (JPanel) getContentPane();
        contentPane.setLayout(null);
        this.setJMenuBar(jMenuBar1);
        setSize(new Dimension(600, 400));
        this.setVisible(true);
        setTitle("画板");
        jMenu1.setText("文件");
        jMenuItem1.setText("打开");
        jMenuItem2.setText("保存");
        jButton1.setBounds(new Rectangle(27, 44, 77, 30));
        jButton1.setText("line");
        jPanel1.setBackground(Color.white);
        jPanel1.setBounds(new Rectangle(125, 18, 410, 308));
        jMenuBar1.add(jMenu1);
        jMenu1.add(jMenuItem1);
        jMenu1.add(jMenuItem2);
        contentPane.add(jPanel1);
        contentPane.add(jButton1);
    }
    public static void main(String[] agrs)
    {
        new  Drawer();
    }
}