Question

下面的Java程序如何修改，当我连续点击变大按钮的时候，图片连续变大

import java.awt.BorderLayout;
import java.awt.Image;
import java.awt.Toolkit;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.image.BufferedImage;
import javax.swing.ImageIcon;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
public class lianxi3 extends JFrame implements ActionListener {
JPanel jPanel;
JLabel jLabel;
Image image;
ImageIcon imageIcon;
JButton jButton;
float www = 1;
float hhh = 1;
public lianxi3() {
super("图片");
jButton = new JButton("变大");
jButton.addActionListener(this);
image = Toolkit.getDefaultToolkit().getImage("src/2.jpg");
jLabel = new JLabel();
jPanel = new JPanel();
ImageIcon imageIcon = new ImageIcon(image);
jLabel.setIcon(imageIcon);
jPanel.add(jLabel);
this.add(jPanel, BorderLayout.NORTH);
this.add(jButton, BorderLayout.SOUTH);
this.setVisible(true);
this.setSize(600, 600);
}
public static void main(String[] args) {
new lianxi3();
}
public void big() {
BufferedImage bffimage = new BufferedImage(700, 700,
BufferedImage.TYPE_3BYTE_BGR);
// 把图片读到bufferedImage中
bffimage.getGraphics().drawImage(image, 0, 0, 700, 700, null);
// 得到转换后的Image图片
Image realImage = bffimage;
// 可以把图片转化为ImageIcon，（Swing中运用）
ImageIcon img = new ImageIcon(realImage);
jLabel.setIcon(img);
}
public void actionPerformed(ActionEvent e) {
if (e.getSource() == jButton) {
big();
}
}
}

Answer 1

import javax.swing.*;

import java.awt.*;
import java.awt.event.*;

public class lianxi3  extends JFrame implements ActionListener{
JPanel jPanel,jPanel1;
JLabel jLabel;
Image	image;
ImageIcon  imageIcon;
JButton jButton;
float www=1;
float hhh=1;
public lianxi3() {
    super("图片");
    jPanel1=new JPanel();
    jButton = new JButton("变大");
    jButton.addActionListener(this);
    image = Toolkit.getDefaultToolkit().getImage("src/1.jpg");
    jLabel = new JLabel();
    jPanel1.add(jButton);
    imageIcon = new ImageIcon(image);
    jLabel.setIcon(imageIcon);
    this.add(jLabel, BorderLayout.NORTH); 
    this.add(jPanel1, BorderLayout.SOUTH);
    this.setVisible(true);
    this.setSize(600, 600);
}
	public static void main(String[] args) {
	 
			new lianxi3();
	}
	public void big(){
        int width=imageIcon.getIconWidth();
        int height=imageIcon.getIconWidth();
        double bigger=1.25;
        www=(float)(width*bigger);
        hhh=(float)(height*bigger);
        System.out.println(www+""+hhh);
        Math.pow(www,hhh);
        image =  image.getScaledInstance((int)www, (int)hhh, Image.SCALE_DEFAULT);
        imageIcon = new ImageIcon(image);
        //jLabel.setSize((int)www, (int)hhh);
        jLabel.setIcon(imageIcon);
    }
	
	public void actionPerformed(ActionEvent e) {
		if(e.getSource()==jButton){
			big();
		}
		
	}
	
}