import java.awt.*;
import javax.swing.*;
public class test_lianxi_4 extends JFrame
{
String name="004.JPEG";
Image img=Toolkit.getDefaultToolkit().getImage(name);
public test_lianxi_4()
{
this.setSize(800,800);
}
public static void main(String args[])
{
new test_lianxi_4().show();
}
public void paintComponent(Graphics g)
{
g.drawImage(img,0,0,600,600,null);
}
}
import javax.swing.*;
public class test_lianxi_4 extends JFrame
{
String name="004.JPEG";
Image img=Toolkit.getDefaultToolkit().getImage(name);
public test_lianxi_4()
{
this.setSize(800,800);
}
public static void main(String args[])
{
new test_lianxi_4().show();
}
public void paintComponent(Graphics g)
{
g.drawImage(img,0,0,600,600,null);
}
}
图象名是004.JPEG???而不是004.JPG??
|
+--java.awt.Component
|
+--java.awt.Container
|
+--javax.swing.JComponent
|
+--javax.swing.JSplitPane
import javax.swing.*;
public class test_lianxi_4 extends JFrame
{
String name="004.jpg";
Image img=Toolkit.getDefaultToolkit().getImage(name);public test_lianxi_4()
{
setIconImage(img); // 添加
this.setSize(600,500);
setVisible(true);
}public static void main(String args[])
{
test_lianxi_4 app = new test_lianxi_4();
app.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
}// 更改
public void paint(Graphics g)
{
g.drawImage(img,0,0,500,400,null);
}}