JAVA用frame实现图中2个窗口 怎么写啊？

图片看起来很模糊，隐约看到需要一个登录窗口，那就分享一下以前练习的登录窗口demo吧。

先上效果图：

登录界面

源码如下：

AbsoluteLoginFrame.java

public class AbsoluteLoginFrame extends JFrame {

private static final int LOGIN_WIDTH = 600;

private static final int LOGIN_HEIGHT = 400;

private static final long serialVersionUID = -2381351968820980500L;

public AbsoluteLoginFrame(){

//设置窗口标题

setTitle("登录界面");

//设置一个初始面板，填充整个窗口

JPanel loginPanel = new JPanel();

//设置背景颜色

loginPanel.setBackground(new Color(204, 204, 204));//#CCC

loginPanel.setLayout(null);

JPanel centerPanel = new JPanel();

centerPanel.setBackground(Color.WHITE);

centerPanel.setBounds(114, 70, 360, 224);

centerPanel.setLayout(null);

JLabel jLabel = new JLabel("用户名：");

jLabel.setOpaque(true);

jLabel.setBackground(Color.YELLOW);

jLabel.setBounds(60, 60, 54, 20);

JLabel label = new JLabel("密 码：");

label.setOpaque(true);

label.setBackground(Color.CYAN);

label.setBounds(60, 90, 54, 20);

JTextField textField = new JTextField(15);

textField.setBounds(130, 60, 166, 21);

JPasswordField passwordField = new JPasswordField(15);

passwordField.setBounds(130, 90, 166, 21);

JButton jButton = new JButton("登录");

jButton.setBounds(148, 120, 62, 28);

centerPanel.add(jLabel);

centerPanel.add(label);

centerPanel.add(textField);

centerPanel.add(jButton);

centerPanel.add(passwordField);

loginPanel.add(centerPanel);

getContentPane().add(loginPanel);//将初始面板添加到窗口中

setSize(LOGIN_WIDTH, LOGIN_HEIGHT);//设置窗口大小

setLocation(Screen.getCenterPosition(LOGIN_WIDTH, LOGIN_HEIGHT));//设置窗口位置

setDefaultCloseOperation(EXIT_ON_CLOSE);//设置窗口默认关闭方式

setResizable(false);

setVisible(true);

}

public static void main(String[] args) {

new AbsoluteLoginFrame();

}

}

Screen.java

public class Screen {

private int width;

private int height;

public Screen(){

Toolkit toolkit = Toolkit.getDefaultToolkit();

Dimension screenSize = toolkit.getScreenSize();

this.width = screenSize.width;

this.height = screenSize.height;

}

public static Point getCenterPosition(int width, int height){

Screen screen = new Screen();

int x = (screen.getWidth() - width) / 2;

int y = (screen.getHeight() - height) / 2;

return new Point(x, y);

}

public int getWidth() {

return width;

}

public void setWidth(int width) {

this.width = width;

}

public int getHeight() {

return height;

}

public void setHeight(int height) {

this.height = height;

}

}