我这周做的这个字体选择框主要使用的组件分别是标签（JLabel）、文本框（JTextField）等组件，运行程序如下：

import java.awt.Dimension;

import java.awt.Toolkit;

import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;

import javax.swing.JButton;import javax.swing.JFrame;import javax.swing.JLabel;import javax.swing.JOptionPane;import javax.swing.JPasswordField;import javax.swing.JTextField;public class Test26 {public static void main(String[] args) {final String userName = "abc";final String passwrod = "123";JFrame jFrame = new JFrame("登陆界面");Dimension dimension = Toolkit.getDefaultToolkit().getScreenSize();jFrame.setBounds(((int)dimension.getWidth() - 200) / 2, ((int)dimension.getHeight() - 300) / 2, 200, 150);jFrame.setResizable(false);jFrame.setLayout(null);jFrame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);JLabel label1 = new JLabel("姓名");label1.setBounds(10, 10, 100, 30);jFrame.add(label1);JLabel label2 = new JLabel("密码");label2.setBounds(10, 40, 100, 30);jFrame.add(label2);final JTextField text1 = new JTextField();text1.setBounds(50, 15, 130, 20);jFrame.add(text1);final JPasswordField text2 = new JPasswordField();text2.setBounds(50, 45, 130, 20);jFrame.add(text2);JButton button = new JButton("登陆");button.setBounds(10, 75, 170, 40);button.addActionListener(new ActionListener() {public void actionPerformed(ActionEvent e) {if(userName.equals(text1.getText()) && passwrod.equals(text2.getText())) {JOptionPane.showMessageDialog(null, "登陆成功误", "提示", JOptionPane.INFORMATION_MESSAGE);} else {JOptionPane.showMessageDialog(null, "错误", "提示", JOptionPane.ERROR_MESSAGE);text1.setText("");text2.setText("");}}});jFrame.add(button);jFrame.setVisible(true);}}