Question

这段代码完全适用于我之前和以后使用的所有其他电脑，但出于某些原因，当我在电脑上运行它时，它有一个奇怪的错误。

当我点击一个正方形然后点击一个圆圈时，我刚刚点击的正方形的新颜色将成为我点击的圆圈的背景颜色，而不是圆圈的填充而是实际的背景

同样，当第一次点击一个圆圈时，我点击的圆圈右侧会出现一个蓝色圆圈的轮廓。

我需要帮助，以便我可以在计算机上编码，并且能够完成我的课程。我已经在使用1.6和1.7的计算机之间切换并更改它们以便它们工作，一切都很好。所以从我所看到的只是我的电脑，我已经更新了所有的Java程序（JDK，我的显卡的驱动程序，eclipse）我似乎无法弄明白。

    import java.awt.*;
    import java.awt.event.ActionEvent;
    import java.awt.event.ActionListener;
    import java.awt.event.MouseEvent;
    import java.awt.event.MouseListener;
    import java.awt.geom.Ellipse2D;
    import java.awt.geom.Rectangle2D;
    import java.awt.geom.RectangularShape;
    import java.awt.Graphics2D;
    import java.util.Random;

    import javax.swing.*;

    public class Part2 extends JFrame {

        public static void main(String[] args) {
            Part2 window = new Part2("Shape Colour");
            window.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        }

        public Part2(String title) {
            super(title);

            //adds the circle and square objects to the new Panel
            JPanel all = new JPanel();
            this.setContentPane(all);
            this.setSize(900, 200);
            this.setResizable(true);
            all.setLayout(new GridLayout());
            all.add(new Circle());
            all.add(new Rectangle());
            all.add(new Circle());
            all.add(new Rectangle());
            all.add(new Circle());        

            setVisible(true);
        }

        abstract class shape extends JPanel {
            Random random = new Random();
            RectangularShape shape;
            Color color;

            //creates a shape of random "colour" (notice the "u"), and adds a MouseListener
            public shape() {
                super();
                //this.setSize();
                randomColor();
                this.addMouseListener(new ShapeListener(this));
            }        

            //Decided how to paint the shape, and fill it with one colour
            //names each shape "thing"
            public void paintComponent(Graphics g) {
                super.paintComponents(g);
                Graphics2D thing = (Graphics2D) g;
                thing.setColor(color);
                thing.fill(shape);
            }        

            //makes a random colour form all possible combinations of colour
            private void randomColor() {
                this.color = new Color(random.nextInt(256), random.nextInt(256),random.nextInt(256));
            }

            class ShapeListener implements MouseListener {        

                JPanel ShapePanel;
                int mouseX;
                int mouseY;

                //shapePanel constructor
                public ShapeListener(JPanel shapePanel) {
                    this.ShapePanel = shapePanel;
                }        

                public void mouseEntered(MouseEvent e) {}
                public void mouseExited(MouseEvent e) {}
                public void mousePressed(MouseEvent e) {}
                public void mouseReleased(MouseEvent e) {}
                public void mouseClicked(MouseEvent e) {
                    //gets the mouse coordinates 
                    mouseX = e.getX();
                    mouseY = e.getY();
                    //if you click within the area of the shape that is at those coordinates then it will repaint, a random colour
                    if (shape.contains(mouseX, mouseY)) {
                    randomColor();
                ShapePanel.repaint();
                    }
                }
            }
        }

        //method for creating a circle
        class Circle extends shape {
            public Circle() {
                super();
                this.shape = new Ellipse2D.Double(10, 10, 150, 150);
            }
        }

        //and a square
        class Rectangle extends shape {
            public Rectangle() {
                super();
                this.shape = new Rectangle2D.Double(10, 10, 150, 150);
            }        

        }
   }

Eclipse Bug仅在我的电脑上

0 个答案: