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《Java课程实习》日志（周四）
import java.awt.EventQueue;
import javax.imageio.ImageIO;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.border.EmptyBorder;
import javax.swing.AbstractButton;
import javax.swing.ImageIcon;
import javax.swing.JButton;
import javax.swing.JFileChooser;
import javax.swing.JTextField;
import javax.swing.JLabel;
import java.awt.Color;
import java.awt.Image;
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;
import java.io.FileFilter;
import java.io.IOException;
import java.util.Random; //+
import javax.swing.JOptionPane; //+
public class Guess3 extends JFrame {
/**
*
*/
private static final long serialVersionUID = 1L;
private JPanel contentPane;
private JTextField tfDir;
private JTextField tfClass;
File[] fileArray; // 目录下全部文件
int NUM_IMG = 0; // 文件总数目
int index = 0; // 当前文件的序号
int i = 0;
String strPath = ""; //+目录路径
String strFileName = ""; //+文件名
JLabel jlbImg = null;
JLabel jlbImg1 = null;
JLabel jlbImg2 = null;
JLabel jlbImg3 = null;
/**
* Launch the application.
*/
public static void main(String[] args) {
EventQueue.invokeLater(new Runnable() {
public void run() {
try {
Guess3 frame = new Guess3();
frame.setVisible(true);
} catch (Exception e) {
e.printStackTrace();
}
}
});
}
/**
* Create the frame.
*/
public Guess3() {
setTitle("\u731C\u731C\u770B\u6E38\u620FV0.1");
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setBounds(100, 100, 645, 510);
contentPane = new JPanel();
contentPane.setBorder(new EmptyBorder(5, 5, 5, 5));
setContentPane(contentPane);
contentPane.setLayout(null);
// 选择目录 button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.showDialog(new JLabel(), "选择");
File file=jfc.getSelectedFile();
tfDir.setText(file.getAbsolutePath());
if(file!=null && file.isDirectory()){
// 获取目录下全部的文件
fileArray = file.listFiles();
NUM_IMG = fileArray.length;
}
}
});
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, 450, 21);
contentPane.add(tfDir);
tfDir.setColumns(10);
// 选择班级 button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.showDialog(new JLabel(), "选择");
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, 450, 21);
contentPane.add(tfClass);
tfClass.setColumns(10);
// 标签，显示带推測学生姓名
final JLabel lbGuessName = new JLabel("姓名");
lbGuessName.setBounds(259, 91,140, 23);
contentPane.add(lbGuessName);
// 标签。显示第一个学生相片
final JLabel lblImg1 = new JLabel("图片一");
lblImg1.addMouseListener(new MouseAdapter () {
@Override
public void mouseClicked(MouseEvent arg0) {
if(arg0.getSource()==lblImg1){//+
if(( lblImg1.getText().equals(lbGuessName.getText()))){
JOptionPane.showMessageDialog(null,"哇。你猜对了","提示",JOptionPane.PLAIN_MESSAGE);
}
else {
JOptionPane.showMessageDialog(null,"no，猜错了","错误",JOptionPane.ERROR_MESSAGE);
}
}
}
});
lblImg1.setBounds(26,155, 150, 200);
contentPane.add(lblImg1);
jlbImg1 = new JLabel();
jlbImg1.setBackground(Color.RED);
jlbImg1.setBounds(26, 151, 181,201);
this.add(jlbImg1);
// 标签，显示第二个学生相片
final JLabel lblImg2 = new JLabel("图片二");
lblImg2.addMouseListener(new MouseAdapter() {
@Override
public void mouseClicked(MouseEvent arg1) {
if(arg1.getSource()==lblImg2){//+
if(( lblImg2.getText().equals(lbGuessName.getText()))){
JOptionPane.showMessageDialog(null,"哇。你猜对了","提示",JOptionPane.PLAIN_MESSAGE);
}
else {
JOptionPane.showMessageDialog(null,"no，猜错了","错误",JOptionPane.ERROR_MESSAGE);
}
}
}
});
lblImg2.setForeground(Color.BLACK);
lblImg2.setBackground(SystemColor.inactiveCaption);
lblImg2.setBounds(241,155, 150, 200);
contentPane.add(lblImg2);
jlbImg2 = new JLabel();
jlbImg2.setBackground(Color.RED);
jlbImg2.setBounds(240, 155, 183, 201);
this.add(jlbImg2);
// 标签。显示第三个学生相片
final JLabel lblImg3 = new JLabel("图片三");
lblImg3.addMouseListener(new MouseAdapter() {
@Override
public void mouseClicked(MouseEvent arg2) {
if(arg2.getSource()==lblImg3){//+
if(( lblImg3.getText().equals(lbGuessName.getText()))){
JOptionPane.showMessageDialog(null,"哇。你猜对了","提示",JOptionPane.PLAIN_MESSAGE);
}
else {
JOptionPane.showMessageDialog(null,"no，猜错了","错误",JOptionPane.ERROR_MESSAGE);
}
}
}
});
lblImg3.setBounds(434,155, 150, 200);
contentPane.add(lblImg3);
jlbImg3 = new JLabel();
jlbImg3.setBackground(Color.RED);
jlbImg3.setBounds(434, 155, 185, 201);
this.add(jlbImg3);
// 再猜一次 button，点击则更新对应的三张图片 与 带推測学生姓名
final JButton btnGuessAgain = new JButton("\u518D\u731C\u4E00\u6B21");
btnGuessAgain.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
if(e.getSource()==btnGuessAgain ){ //假设是nextbutton
Random random = new Random(System.currentTimeMillis());//+
ImageIcon icon;
//int k[] = null;
for(int i=0;i<3;i++)
{
index = random.nextInt(NUM_IMG);
String strTmp = fileArray[index].toString();
String filename1=fileArray[index].getName();
try {
icon = new ImageIcon(ImageIO.read(new File(strTmp)));
// 从图表中获取到图片
Image image = icon.getImage();
// 缩放图像
Image smallImage = image.getScaledInstance(150,200,Image.SCALE_FAST);
//把Image文件转化为ImageIcon
icon = new ImageIcon(smallImage);
if(index==NUM_IMG)
index = 0;
switch(i)
{
case 0:
System.out.println(fileArray[index].getName());
lblImg1.setIcon(icon);
lblImg1.setText(filename1);
break;
case 1:
System.out.println(fileArray[index].getName());
lblImg2.setIcon(icon);
lblImg2.setText(filename1);
break;
case 2:
System.out.println(fileArray[index].getName());
lblImg3.setIcon(icon);
lblImg3.setText(filename1);
break;
}
} catch (IOException e1) {
e1.printStackTrace();
}
}
}
@SuppressWarnings("unused")
Random random1 = new Random(index);
//i = index;
System.out.println(fileArray[index].getName());
String filename=fileArray[index].getName();
lbGuessName.setText(filename);
}
});//==+
btnGuessAgain.setBounds(223, 400, 93, 23);
contentPane.add(btnGuessAgain);
}
}
完毕周二和周三代码的结合，其他功能不会做了，仅仅能实现到这里了。假设要使图片和名字能对上的话还要加入数组
《Java课程实习》日志（周四）
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