《Java课程实习》日志（周三）

在之前的代码上添加<span style="font-size:14px;">import java.util.Random; import javax.swing.JOptionPane; </span>

<span style="font-size:14px;">final JLabel lblImg1 = new JLabel("图片一");lblImg1.addMouseListener(new MouseAdapter () {@Overridepublic 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);}}} });</span>lblImg2.addMouseListener(new MouseAdapter() {@Overridepublic 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);}}}});

final JLabel lblImg3 = new JLabel("图片三");lblImg3.addMouseListener(new MouseAdapter() {@Overridepublic 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);}}}});把这代码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));}});改成

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ImageIconicon = 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);}});就能实现以下功能

不足之处就是第二个文本框不选择txt文件也能实现该功能，且能猜对的总是最后一个，不是随机的，还有就是三张图片有时候会出现两张一样的。

曾经拥有的不要忘记，难以得到的更要珍惜，

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