package GUI;
import javax.swing.*;
import java.awt.*;
// 图标Icon,进一步学习，可以放在label上，也可以放在按钮上
public class Test16_Icon extends JFrame implements Icon{
private int width,height;
public Test16_Icon(){};
public Test16_Icon(int width,int height){
this.width=width;
this.height=height;
}
public void init(){
Test16_Icon test16Icon = new Test16_Icon(150, 150);
setSize(500,500);
setVisible(true);
Container container =getContentPane();
JLabel label = new JLabel("zhan",test16Icon,SwingConstants.CENTER); // 标签的其他表示形式
container.add(label);
}
@Override
public void paintIcon(Component c, Graphics g, int x, int y) {
g.fillOval(x,y,width,height); // 椭圆，w，h是包裹住椭圆的矩形大小
}
@Override
public int getIconWidth() {
return width;
}
@Override
public int getIconHeight() {
return height;
}
public static void main(String[] args) {
new Test16_Icon().init();
}
}
package GUI;
import javax.swing.*;
import java.awt.*;
import java.net.URL;
// 图片标签
public class Test16_ImageIcon extends JFrame{
public Test16_ImageIcon(){
// 获取图片 地址
URL url = Test16_ImageIcon.class.getResource("piture.png"); // 获得同一级别下的资源
ImageIcon imageIcon = new ImageIcon(url); // ImageIcon 是一个图片类
JLabel imageLabel = new JLabel("ImageLabel",imageIcon ,0); // 也是标签
Container contentPane = getContentPane();
contentPane.add(imageLabel);
setSize(500,500);
setVisible(true);
setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
}
public static void main(String[] args) {
new Test16_ImageIcon();
}
}