第一次Java作业——简单的登录界面

千里之行，始于足下，从小做起，一点一滴学编程。

 import javax.swing.*;
 import java.awt.*;

 public class Homework{

     public static void main(String[] args){

         JFrame frame = new JFrame();

         JPanel panel1 = new JPanel();
         JPanel panel2 = new JPanel();
         JLabel label0 = new JLabel("      学生成绩管理系统");
         JLabel label1 = new JLabel("用户名:");
         JLabel label2 = new JLabel("密码:");
         JTextField jtf = new JTextField(10);
         JPasswordField jpf = new JPasswordField(10);
         JButton button1 = new JButton("登录");
         JButton button2 = new JButton("取消");

         Font font1 = new Font("SansSerif",Font.BOLD,50);
         Font font2 = new Font("SansSerif",Font.BOLD,25);
         Font font3 = new Font("SansSerif",Font.BOLD,35);
         ImageIcon icon1 = new ImageIcon("1.png");
         ImageIcon icon2 = new ImageIcon("2.png");
         ImageIcon icon3 = new ImageIcon("3.png");
         ImageIcon icon4 = new ImageIcon("4.png");
         ImageIcon icon5 = new ImageIcon("5.png");

         frame.add(panel1);
         panel1.setSize(600, 150);
         panel1.setBackground(Color.CYAN);
         panel1.setLayout(new BorderLayout());
         panel1.add(label0,BorderLayout.CENTER);
         label0.setFont(font1);
         label0.setForeground(Color.BLUE);

         frame.add(panel2);
         panel2.setSize(460, 220);
         panel2.setLocation(60, 200);
         panel2.setLayout(new GridLayout(3,2,20,35));
         panel2.add(label1);
         panel2.add(jtf);
         panel2.add(label2);
         panel2.add(jpf);
         panel2.add(button1);
         panel2.add(button2);
         label1.setFont(font2);
         label2.setFont(font2);
         button1.setFont(font3);
         button2.setFont(font3);
         label1.setIcon(icon2);
         label2.setIcon(icon3);
         button1.setIcon(icon4);
         button2.setIcon(icon5);
         label1.setForeground(Color.BLUE);
         label2.setForeground(Color.BLUE);
         button1.setForeground(Color.BLUE);
         button2.setForeground(Color.BLUE);

         frame.setTitle("用户登录");
         frame.setIconImage(icon1.getImage());
         frame.setSize(600,500);
         frame.setLocation(400, 300);
         frame.setLayout(null);
         frame.setResizable(false);
         frame.setVisible(true);
         frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
     }
 }

非常简单，作为博客园的开端，附上界面结果图：