Java课程设计实训第二天——对话框的重新设定与图片显示

来源：互联网发布：大数据经济的发现现状编辑：程序博客网时间：2024/06/07 05:24
今天的实验不是很顺利，所以在第一天的基础上进行修改，本来是打算显示一张图片，三个姓名选项，可是感觉不是很好，就改了，感觉还不错，除了一点其他的都很满意，就是姓名显示不了，明天好好修改一下应该可以。
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;public class Guess01 extends JFrame {    /**     *      */    private static final long serialVersionUID = 1L;        private JPanel contentPane;    private JTextField tfDir;    private JTextField tfClass;    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 int idImg = 1;    JLabel jlbImg1 = null;    JLabel jlbImg2 = null;    JLabel jlbImg3 = null;    /**     * Launch the application.     */class myFileFilter implements FileFilter{              @Override          public boolean accept(File pathname) {              String filename = pathname.getName().toLowerCase();              if(filename.contains(".jpg")){                  return false;              }else{                  return true;              }          }      }      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.showDialog(new JLabel(), "选择");                   File file=jfc.getSelectedFile();                  tfDir.setText(file.getAbsolutePath());                 if(file!=null && file.isDirectory()){                     // 参考： java中File.listFiles(FileFilter) FileFilter的使用                      //  http://zhouzaibao.iteye.com/blog/347557 ;                                          // 获取文件夹下所有的文件                     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, 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.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, 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.addMouseListener(new MouseAdapter() {            @Override            public void mouseClicked(MouseEvent arg0) {                        }         });        lbGuessName.setBounds(259, 91, 102, 23);        contentPane.add(lbGuessName);        lbGuessName = new JLabel();        this.add(lbGuessName);                        // 标签，显示第一个学生相片        final JLabel lblImg1 = new JLabel("\u56FE\u72471");                lblImg1.addMouseListener(new MouseAdapter() {            @Override            public void mouseClicked(MouseEvent arg0) {                        }         });        lblImg1.setBounds(26, 21, 183, 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("\u56FE\u72472");        lblImg2.addMouseListener(new MouseAdapter() {            @Override            public void mouseClicked(MouseEvent e) {                                        }        });        lblImg2.setForeground(Color.BLACK);        lblImg2.setBackground(SystemColor.inactiveCaption);        lblImg2.setBounds(241, 21, 200, 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("\u56FE\u72473");        lblImg3.addMouseListener(new MouseAdapter() {                    @Override            public void mouseClicked(MouseEvent e) {                                         }        });        lblImg3.setBounds(434,21, 200, 200);        contentPane.add(lblImg3);        jlbImg3 = new JLabel();        jlbImg3.setBackground(Color.RED);        jlbImg3.setBounds(434, 155, 185, 201);        this.add(jlbImg3);        // 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        final JButton btnGuessAgain = new JButton("\u518D\u731C\u4E00\u6B21");        btnGuessAgain.addActionListener(new ActionListener() {            public void actionPerformed(ActionEvent e) {            if(e.getSource()==btnGuessAgain ){ //如果是next按钮                    String strTmp = fileArray[index].toString();                    index++;                    if(index==NUM_IMG)                        index = 0;                    jlbImg1.setIcon(new ImageIcon(strTmp));                                        index++;                    jlbImg2.setIcon(new ImageIcon(strTmp));                    index++;                    if(e.getSource()==btnGuessAgain ){ //如果是next按钮                        String strTmp2 = fileArray[index].toString();                        index++;                                               jlbImg2.setIcon(new ImageIcon(strTmp2));                                                index++;                                                             }                                   }   String strTmp1 = fileArray[index].toString();                    index++;                    jlbImg3.setIcon(new ImageIcon(strTmp1));               }        });        btnGuessAgain.setBounds(223, 337, 93, 23);        contentPane.add(btnGuessAgain);    }}
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