java实习日记三
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今天,我完成了对于图片的显示功能。我通过上网查找如何让图片在java上显示出来。写入一段代码在原代码上实现了图片的显示。今天也只能做到这里。明天继续去完成猜猜看的名字配对部分
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; int NUM_IMG = 0; int index = 0; 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()){ // 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("姓名"); lbGuessName.setBounds(259, 100, 150, 25); contentPane.add(lbGuessName); // 标签,显示第一个学生相片 final JLabel lblImg1 = new JLabel("第一个学生"); 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("第二个学生"); 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("第三个学生"); 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("再猜一次"); btnGuessAgain.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent e) { if (e.getSource() == btnGuessAgain) { // 如果是next按钮 Random random = new Random(System.currentTimeMillis()); // 循环三次 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()); // k[0]=index; lblImg1.setIcon(icon); lblImg1.setText(filename1); break; case 1: System.out.println(fileArray[index].getName()); lblImg2.setIcon(icon); lblImg2.setText(filename1); // k[1]=index; break; case 2: System.out.println(fileArray[index].getName()); lblImg3.setIcon(icon); lblImg3.setText(filename1); // k[2]=index; break; } } catch (IOException e1) { // TODO Auto-generated catch block 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); } }
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