import java.awt.geom.*;
import java.awt.*;
import javax.swing.*;public class DrawTest
{
public static void main(String[] args)
{
EventQueue.invokeLater(new Runnable()
{
public void run()
{
DrawFrame frame = new DrawFrame();
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setVisible(true);
}
}
);
}
}class DrawFrame extends JFrame
{
public DrawFrame()
{
setTitle("DrawTest");
setSize(DEFAULT_WIDTH,DEFAULT_HEIGHT);
//向面板添加内容
DrawComponent component = new DrawComponent();
add(component);
}
public static final int DEFAULT_WIDTH = 400;
public static final int DEFAULT_HEIGHT = 400;
}
class DrawComponent extends JComponent
{
public void painComponent(Graphics g)
{
Graphics2D g2 = (Graphics2D) g;
//画个矩形
double leftX = 100;
double topY = 100;
double width = 150;
double heigh = 200;
Rectangle2D rect = new Rectangle2D.Double(leftX, topY, width, heigh);
g2.draw(rect);
//画个椭圆
Ellipse2D ellipse = new Ellipse2D.Double();
ellipse.setFrame(rect);
g2.draw(ellipse);
//画个圆
double centerX = rect.getCenterX();
double centerY = rect.getCenterY();
double radius = 150;
Ellipse2D circle = new Ellipse2D.Double();
circle.setFrameFromCenter(centerX, centerY, centerX + radius, centerY + radius);
g2.draw(circle);
}
}
import java.awt.*;
import javax.swing.*;public class DrawTest
{
public static void main(String[] args)
{
EventQueue.invokeLater(new Runnable()
{
public void run()
{
DrawFrame frame = new DrawFrame();
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setVisible(true);
}
}
);
}
}class DrawFrame extends JFrame
{
public DrawFrame()
{
setTitle("DrawTest");
setSize(DEFAULT_WIDTH,DEFAULT_HEIGHT);
//向面板添加内容
DrawComponent component = new DrawComponent();
add(component);
}
public static final int DEFAULT_WIDTH = 400;
public static final int DEFAULT_HEIGHT = 400;
}
class DrawComponent extends JComponent
{
public void painComponent(Graphics g)
{
Graphics2D g2 = (Graphics2D) g;
//画个矩形
double leftX = 100;
double topY = 100;
double width = 150;
double heigh = 200;
Rectangle2D rect = new Rectangle2D.Double(leftX, topY, width, heigh);
g2.draw(rect);
//画个椭圆
Ellipse2D ellipse = new Ellipse2D.Double();
ellipse.setFrame(rect);
g2.draw(ellipse);
//画个圆
double centerX = rect.getCenterX();
double centerY = rect.getCenterY();
double radius = 150;
Ellipse2D circle = new Ellipse2D.Double();
circle.setFrameFromCenter(centerX, centerY, centerX + radius, centerY + radius);
g2.draw(circle);
}
}
import java.awt.geom.*;
import java.awt.*;
import javax.swing.*;public class DrawTest
{
public static void main(String[] args)
{
EventQueue.invokeLater(new Runnable()
{
public void run()
{
DrawFrame frame = new DrawFrame();
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setVisible(true);
}
}
);
}
}class DrawFrame extends JFrame
{
public DrawFrame()
{
setTitle("DrawTest");
setSize(DEFAULT_WIDTH,DEFAULT_HEIGHT);
//向面板添加内容
DrawComponent component = new DrawComponent();
add(component);
}
public static final int DEFAULT_WIDTH = 400;
public static final int DEFAULT_HEIGHT = 400;
}
class DrawComponent extends JComponent
{
public void painComponent(Graphics g)
{
Graphics2D g2 = (Graphics2D) g;
//画个矩形
double leftX = 100;
double topY = 100;
double width = 150;
double heigh = 200;
Rectangle2D rect = new Rectangle2D.Double(leftX, topY, width, heigh);
g2.draw(rect);
//画个椭圆
Ellipse2D ellipse = new Ellipse2D.Double();
ellipse.setFrame(rect);
g2.draw(ellipse);
//画个圆
double centerX = rect.getCenterX();
double centerY = rect.getCenterY();
double radius = 150;
Ellipse2D circle = new Ellipse2D.Double();
circle.setFrameFromCenter(centerX, centerY, centerX + radius, centerY + radius);
g2.draw(circle);
}
}
public void paintComponent(Graphics g)