登陆界面 java

public static void main(String args[]) {

final Frame frmFrame = new Frame(); Panel pnlPanel = new Panel();

Label lblUsername = new Label(\"用户名\"); Label lblPassword = new Label(\"密码\");

final TextField txtUsername = new TextField(\"管理员\"); final TextField txtPassword = new TextField(\"\ txtUsername.setEditable(false); txtPassword.setEchoChar('*');

Button btnButton1 = new Button(\"登录\"); Button btnButton2 = new Button(\"其它用户登录\"); Button btnButton3 = new Button(\"关闭\");

btnButton1.addActionListener( new ActionListener() {

public void actionPerformed(ActionEvent e) {

if( (txtPassword.getText()).length() == 0 ) {

JOptionPane.showMessageDialog(frmFrame, \"密码不能为空\"); return; }

txtPassword.setColumns(16);

System.out.println(txtUsername.getText()+\"用户的密码：\"+ txtPassword.getText() ); }

} );

btnButton2.addActionListener( new ActionListener() {

public void actionPerformed(ActionEvent e) {

txtUsername.setEditable(true); } } );

btnButton3.addActionListener( new ActionListener() {

public void actionPerformed(ActionEvent e) {

System.exit(0); } } );

pnlPanel.add(lblUsername); pnlPanel.add(txtUsername); pnlPanel.add(lblPassword); pnlPanel.add(txtPassword); pnlPanel.add(btnButton1); pnlPanel.add(btnButton2); pnlPanel.add(btnButton3); frmFrame.add(pnlPanel);

frmFrame.setTitle(\"请输入密码！！\"); frmFrame.setBackground(Color.white); frmFrame.setLocation(250,250); frmFrame.pack(); frmFrame.show(); } }