《Java程序设计》第17周课程设计：实现部分选择功能

import java.awt.EventQueue;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.border.EmptyBorder;
import javax.swing.JFileChooser;
import javax.swing.JButton;
import javax.swing.JTextField;
import javax.swing.JLabel;
import java.awt.Color;
import java.awt.SystemColor;
import java.awt.event.ActionListener;
import java.awt.event.ActionEvent;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.io.File;
public class Guess01 extends JFrame {
/**
*
*/
private static final long serialVersionUID = 1L;
String strPath = "";    //文件夹路径
String strFileName = "";    //文件名称

File[] fileArray;   // 文件夹下所有文件
int NUM_IMG = 0;    // 文件总数目
int index   = 0;    // 当前文件的序号

private JPanel contentPane;
private JTextField tfDir;
private JTextField tfClass;
/**
* Launch the application.
*/
public static void main(String[] args) {
EventQueue.invokeLater(new Runnable() {
public void run() {
try {
Guess01 frame = new Guess01();
frame.setVisible(true);
} catch (Exception e) {
e.printStackTrace();
}
}
});
}
/**
* Create the frame.
*/
public Guess01() {
setTitle("\u731C\u731C\u770B\u6E38\u620FV0.1");
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setBounds(100, 100, 645, 409);
contentPane = new JPanel();
contentPane.setBorder(new EmptyBorder(5, 5, 5, 5));
setContentPane(contentPane);
contentPane.setLayout(null);

// 选择目录 按钮的处理程序
JButton btnDir = new JButton("\u9009\u62E9\u76EE\u5F55");
btnDir.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent arg0) {

JFileChooser jfc=new JFileChooser();
//jfc.setFileSelectionMode(JFileChooser.FILES_AND_DIRECTORIES );
jfc.setFileSelectionMode(JFileChooser.DIRECTORIES_ONLY);
jfc.showDialog(new JLabel(), "open");
File file=jfc.getSelectedFile();
tfDir.setText(file.getAbsolutePath());
strPath = file.getAbsolutePath();
strFileName = jfc.getSelectedFile().getName();
}
});
btnDir.setBounds(26, 26, 93, 23);
contentPane.add(btnDir);

// 文本框，显示目录
tfDir = new JTextField();
tfDir.setEditable(false);
tfDir.setBounds(125, 27, 363, 21);
contentPane.add(tfDir);
tfDir.setColumns(10);

// 选择班级 按钮的处理程序
JButton btnClass = new JButton("\u9009\u62E9\u73ED\u7EA7");
btnClass.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
JFileChooser jfc=new JFileChooser();
//jfc.setFileSelectionMode(JFileChooser.FILES_AND_DIRECTORIES );
jfc.setFileSelectionMode(JFileChooser.FILES_ONLY);
jfc.showDialog(new JLabel(), "open");
File file=jfc.getSelectedFile();
tfClass.setText(file.getAbsolutePath());
}
});
btnClass.setBounds(26, 59, 93, 23);
contentPane.add(btnClass);

// 文本框，显示班级文件
tfClass = new JTextField();
tfClass.setEditable(false);
tfClass.setBounds(125, 60, 363, 21);
contentPane.add(tfClass);
tfClass.setColumns(10);

// 标签，显示带猜测学生姓名
JLabel lbGuessName = new JLabel("\u59D3\u540D");
lbGuessName.setBounds(259, 91, 102, 23);
contentPane.add(lbGuessName);

// 标签，显示第一个学生相片
JLabel lblImg1 = new JLabel("\u56FE\u72471");
lblImg1.setBackground(Color.RED);
this.add(lblImg1);

lblImg1.addMouseListener(new MouseAdapter() {
@Override
public void mouseClicked(MouseEvent arg0) {

}
});
lblImg1.setBounds(26, 151, 183, 178);
contentPane.add(lblImg1);

// 标签，显示第二个学生相片
JLabel lblImg2 = new JLabel("\u56FE\u72472");
lblImg2.addMouseListener(new MouseAdapter() {
@Override
public void mouseClicked(MouseEvent e) {

}
});
lblImg2.setForeground(Color.BLACK);
lblImg2.setBackground(SystemColor.inactiveCaption);
lblImg2.setBounds(241, 155, 183, 172);
contentPane.add(lblImg2);

// 标签，显示第三个学生相片
JLabel lblImg3 = new JLabel("\u56FE\u72473");
lblImg3.addMouseListener(new MouseAdapter() {
@Override
public void mouseClicked(MouseEvent e) {

}
});
lblImg3.setBounds(434, 155, 185, 172);
contentPane.add(lblImg3);

// 再猜一次 按钮，点击则更新相应的三张图片 与 带猜测学生姓名
JButton btnGuessAgain = new JButton("\u518D\u731C\u4E00\u6B21");
btnGuessAgain.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {

}
});
btnGuessAgain.setBounds(223, 337, 93, 23);
contentPane.add(btnGuessAgain);
}
}