package com.sitech.test;

import java.awt.Dimension;
import java.awt.EventQueue;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.Image;

import javax.swing.ImageIcon;
import javax.swing.JComponent;
import javax.swing.JFrame;

public class ImageTest {
public static void main(String[] args)
{
EventQueue.invokeLater(new Runnable()
{
public void run()
{
JFrame frame = new ImageFrame();
frame.setTitle("sasdas");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setVisible(true);

}

});    

}
}
class ImageFrame extends JFrame
{
public ImageFrame()
{
add(new ImageComponent());
pack();


}


}

class ImageComponent extends JComponent
{
private static final int DEFAULT_WIDTH =800;
private static final int DEFAULT_HEIGHT = 800;

private Image image;

public ImageComponent()
{
    String path = "com/sitech/test/111.jpg";
image= new ImageIcon(ClassLoader.getSystemResource(path)).getImage();// 通过这种方式加载图片


}
public void paintComponent(Graphics g)
{
    Graphics2D g2 = (Graphics2D)g;  
if(image==null)return;

int imageWidth = image.getWidth(this);
int imageHeight = image.getHeight(this);

g2.drawImage(image,0,0,this);//这种方式 


for(int i =0 ;i*imageWidth<= getWidth();i++)
    for(int j = 0 ;j*imageHeight<=getHeight();j++)
	if(i+j>0)
	    g2.copyArea(0, 0, imageWidth, imageHeight,i*imageWidth,j*imageHeight);


}
public Dimension getPreferredSize(){return new Dimension(DEFAULT_WIDTH,DEFAULT_HEIGHT);}

}