piechart1.java

管理系统实现的源代码,

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package 学生成绩管理系统;
import java.awt.*;
import javax.swing.*;

public class  PieChart1 extends JPanel {
    private int A;
    private int B;
    private int C;
    private int D;
    private int E;

    public void set(int aR,int bR,int cR,int dR,int eR)
    {       
        A=aR;
        B=bR;
        C=cR;
        D=dR;
        E=eR;
    
    }
        public PieChart1(){
   //     repaint();
    }
    @Override
  protected void paintComponent(Graphics g) {
    super.paintComponent(g);

    int w = getWidth();
    int h = getHeight();
    int xCenter = w / 2;
    int yCenter = h / 2;
    int radius = (int)(Math.min(w, h) * 0.8 / 2);
    int x = xCenter - radius;
    int y = yCenter - radius;

   g.setColor(new Color(255,153,153));
   // g.setColor(Color.red);
    g.fillArc(x, y, 2 * radius, 2 * radius, 0, (int)(360*A/(A+B+C+D+E)));

    g.setColor(new Color(153,255,204));
    g.fillArc(x, y, 2 * radius, 2 * radius, (int)(360*A/(A+B+C+D+E)),
    (int)(360*B/(A+B+C+D+E)));
    g.setColor(Color.black);

    g.setColor(new Color(153,153,255));
    g.fillArc(x, y, 2 * radius, 2 * radius,(int)(360*(A+B)/(A+B+C+D+E)),
      (int)(360*C/(A+B+C+D+E)));
    g.setColor(Color.black);
    
   g.setColor(new Color(153,153,153));
    g.fillArc(x, y, 2 * radius, 2 * radius, (360*(A+B+C)/(A+B+C+D+E)),
     (360*D/(A+B+C+D+E)));
    g.setColor(Color.black);

    g.setColor(Color.yellow);
    g.fillArc(x, y, 2 * radius, 2 * radius, (360*(A+B+C+D)/(A+B+C+D+E)),
    (360*E/(A+B+C+D+E)));
  }


}