《猜猜看》第一次发布

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import java.awt.BorderLayout;  
import java.awt.Component;  
import java.awt.EventQueue;  
import java.awt.FlowLayout;  
import java.awt.Image;  
import javax.imageio.ImageIO;  
import javax.swing.AbstractButton;  
import javax.swing.ImageIcon;  
import javax.swing.JFrame;  
import javax.swing.JOptionPane;  
import javax.swing.JPanel;  
import javax.swing.SwingConstants;  
import javax.swing.border.EmptyBorder;  
import javax.swing.JButton;  
import javax.swing.JLabel;  
import java.awt.Color;  
import java.awt.event.ActionListener;  
import java.awt.event.ActionEvent;  
import java.io.File;  
import java.io.IOException;  
  
public class TableDatabase extends JFrame {  
    private static final Component JButton = null;  
    private JPanel contentPane;  
    private int idImg = 1;  
    /** 
     * Launch the application. 
     */  
    public static void main(String[] args) {  
        EventQueue.invokeLater(new Runnable() {  
            public void run() {  
                try {  
                    TableDatabase frame = new TableDatabase();  
                    frame.setVisible(true);  
                } catch (Exception e) {  
                    e.printStackTrace();  
                }  
            }  
        });  
    }  
    /** 
     * Create the frame. 
     */  
    public TableDatabase() {  
        setTitle("图片显示");  
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);  
        setBounds(100, 100, 450, 500);  
        contentPane = new JPanel();  
        contentPane.setBorder(new EmptyBorder(5, 5, 5, 5));  
        setContentPane(contentPane);  
        contentPane.setLayout(null);  
        getContentPane().setLayout(new FlowLayout());  
  
        final JLabel lblNewLabel = new JLabel("New label");  
        lblNewLabel.setBackground(Color.YELLOW);  
        lblNewLabel.setForeground(Color. LIGHT_GRAY);  
        lblNewLabel.setBounds(60, 90, 400, 400);  
        contentPane.add(lblNewLabel);  
        /*@1 
         *  
         */  
        JButton button_1 = new JButton("上一张");  
        button_1.setVerticalAlignment(SwingConstants.TOP);  
        button_1.setBounds(145, 10, 69, 23);  
        getContentPane().add(button_1);  
        button_1.addActionListener(new ActionListener() {  
            public void actionPerformed(ActionEvent e) {  
                ImageIcon icon;  
                try {  
                    String strImgFile = "E:/demoPhoto"; // 获取图片的路径  
                    strImgFile = strImgFile + String.valueOf(idImg) + ".jpg";// 得到图片的完整路径  
                    icon = new ImageIcon(ImageIO.read(new File(strImgFile)));// 读取图片  
                    //第一种  
                    Image image = icon.getImage(); // 从图表中获取到图片  
                    Image smallImage = image.getScaledInstance(300,300,Image.SCALE_FAST);// 缩放图像  
                    icon = new ImageIcon(smallImage);   //把Image文件转化为ImageIcon  
  
                    /* 第二种方法 
                   Image srcImg  = ImageIO.read(new FileInputStream(strImgFile) );//取源图 
                   int  width  =  200; //假设要缩小到600点像素 
                   int  height =  srcImg.getHeight(null)*200/srcImg.getWidth(null);//按比例，将高度缩减 
                   Image smallImg =srcImg.getScaledInstance(width, height, Image.SCALE_FAST);//缩小 
                   icon = new ImageIcon(smallImg); 
                     */  
  
                    lblNewLabel.setIcon(icon);  
                    // 为下一张图片做准备，一共9张图片，显示完第9张后，重新显示第一张  
                    int idImg=1;  
                    idImg--;  
                    if(idImg==10)  
                        idImg = 1;  
                    else  
                        //System.out.println("没有可显示的了");  
                        JOptionPane.showMessageDialog(null, "没有可显示的了");//  
                } catch (IOException e1) {  
                    // TODO Auto-generated catch block  
                    e1.printStackTrace();  
                }  
            }  
        });  
        button_1.setBounds(200, 50, 153, 30);  
        contentPane.add(button_1);  
        /*@2 
         *  
         */  
        JButton button = new JButton("下一张");  
        button.setVerticalAlignment(SwingConstants.TOP);  
        button.setBounds(219, 10, 69, 23);  
        getContentPane().add(button);  
  
        button.addActionListener(new ActionListener() {  
            public void actionPerformed(ActionEvent e) {  
                ImageIcon icon;  
                try {  
                    String strImgFile = "E:/demoPhoto/"; // 获取图片的路径  
                    strImgFile = strImgFile + String.valueOf(idImg) + ".jpg";// 得到图片的完整路径  
                    icon = new ImageIcon(ImageIO.read(new File(strImgFile)));// 读取图片  
                    //第一种  
                    Image image = icon.getImage(); // 从图表中获取到图片  
                    Image smallImage = image.getScaledInstance(300,300,Image.SCALE_FAST);// 缩放图像  
                    icon = new ImageIcon(smallImage);   //把Image文件转化为ImageIcon  
  
                    /* 第二种方法 
                   Image srcImg  = ImageIO.read(new FileInputStream(strImgFile) );//取源图 
                   int  width  =  200; //假设要缩小到600点像素 
                   int  height =  srcImg.getHeight(null)*200/srcImg.getWidth(null);//按比例，将高度缩减 
                   Image smallImg =srcImg.getScaledInstance(width, height, Image.SCALE_FAST);//缩小 
                   icon = new ImageIcon(smallImg); 
                     */  
  
                   // 设置Jlabel标签的icon（图标）  
                    lblNewLabel.setIcon(icon);  
                    // 为下一张图片做准备，一共9张图片，显示完第9张后，重新显示第一张  
                    idImg = idImg+1;  
                    if(idImg==10)  
                        idImg = 1;  
                } catch (IOException e1) {  
                    // TODO Auto-generated catch block  
                    e1.printStackTrace();  
                }  
            }  
        });  
        button.setBounds(200, 37, 153, 28);  
        contentPane.add(button);  
    }  
}  

《猜猜看》第一次发布

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原文地址：http://blog.csdn.net/u014026824/article/details/46688729