有没有办法在下面的Java程序中加快绘图过程

Question

此程序使用fillPolygon((方法在屏幕上绘制一个正方形。在执行代码时，绘图部分非常缓慢。我该如何改进？还是说使用JavaAWT的GUI开发最差？

import java.awt.*;
import java.awt.event.*;
public class BluePolygon extends Frame {
int x, x1, y, y1;
public BluePolygon() {
addWindowListener(new WindowAdapter() {
public void windowClosing(WindowEvent we) {
System.exit(0);
}
});
addMouseListener(new MouseAdapter() {
public void mousePressed(MouseEvent me) {
x = me.getX();
y = me.getY();
}
});
addMouseMotionListener(new MouseAdapter() {
public void mouseDragged(MouseEvent me) {
x1 = me.getX();
y1 = me.getY();
repaint();
}
});
}
public void paint(Graphics g) {
g.setColor(new Color(Color.blue.getRed(),Color.blue.getGreen(),Color.blue.getBlue(),60));
int xx[] = {x1,x,x,x1};
int yy[] = {y,y,y1,y1};
g.fillPolygon(xx, yy, 4);
}
public static void main(String args[]) {
BluePolygon winapp = new BluePolygon();
winapp.setTitle("Blue Polygon");
winapp.setSize(1200, 720);
winapp.setVisible(true);
}
}

Answer 1

或者是使用Java AWT的GUI开发最差？

我会这么说的。

你可以将它与Swing环境进行比较，至少在我的电脑中，Swing环境效果更好。

public class BluePolygon extends JPanel {
private static final long serialVersionUID = 1L;
int x, x1, y, y1;
public BluePolygon() {
addMouseListener(new MouseAdapter() {
@Override
public void mousePressed(MouseEvent me) {
x = me.getX();
y = me.getY();
}
});
addMouseMotionListener(new MouseAdapter() {
@Override
public void mouseDragged(MouseEvent me) {
x1 = me.getX();
y1 = me.getY();
repaint();
}
});
}
@Override
public void paintComponent(Graphics g) {
super.paintComponent(g);
g.setColor(new Color(Color.blue.getRed(), Color.blue.getGreen(), Color.blue.getBlue(), 60));
int xx[] = { x1, x, x, x1 };
int yy[] = { y, y, y1, y1 };
g.fillPolygon(xx, yy, 4);
}
public static void main(String args[]) {
SwingUtilities.invokeLater(() -> {
BluePolygon winapp = new BluePolygon();
winapp.setPreferredSize(new Dimension(400, 400));
JFrame frame = new JFrame("");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setLayout(new BorderLayout());
frame.add(winapp);
frame.pack();
frame.setLocationByPlatform(true);
frame.setVisible(true);
});
}
}