showrounds.java

关于学生成绩管理系统的,是比较好的.估计适合比较多的学校的

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;

public class ShowRounds extends JFrame{
	public int count;
	public int count2;
	public int count3;
	public int count4;
	public int count5;
	public int count6;
	
	public ShowRounds(int c,int c2,int c3,int c4,int c5,int c6){
		this.count=c;
		this.count2=c2;
		this.count3=c3;
		this.count4=c4;
		this.count5=c5;
		this.count6=c6;
		
	/*	if(count==0){
			count=1;
		}*/
		
		getContentPane().setLayout(new BorderLayout());
		getContentPane().add(new JLabel("显示成绩情况",SwingConstants.CENTER),
		BorderLayout.NORTH);
		getContentPane().add(new showout(count,count2,count3,count4,
		count5,count6),BorderLayout.CENTER);
	}
	
/*	public static void main(String[] args){
		ShowRounds frame=new ShowRounds();
		frame.setSize(450,350);
		frame.setVisible(true); 
	}*/
}

class showout extends JPanel{
	public int count;
	public int count2;
	public int count3;
	public int count4;
	public int count5;
	public int count6;
	
	public  showout(){
	}
	
	public showout(int c,int c2,int c3,int c4,int c5,int c6){
		this.count=c;
		this.count2=c2;
		this.count3=c3;
		this.count4=c4;
		this.count5=c5;
		this.count6=c6;
		this.setBackground(Color.pink);
	}
	
	protected void paintComponent(Graphics g){
		super.paintComponent(g);
		
		
		
		if(0==count){
			g.setColor(Color.black);
			g.drawString("本班没有人参加此课程",150,150);
		}
		else{
		int x=getWidth()/9;
		int y=getHeight()/9;
		int r=getHeight()*4/5;
		
		int a1=360*count2/count;
		int a2=a1+360*count3/count;
		int a3=a2+360*count4/count;
		int a4=a3+360*count5/count;
		g.setColor(Color.cyan);
		g.fillArc(x,y,r,r,0,360*count2/count);
		
		g.setColor(Color.magenta);			
		g.fillArc(x,y,r,r,a1,360*count3/count);
		
		g.setColor(Color.lightGray);
		g.fillArc(x,y,r,r,a2,360*count4/count);
		
		g.setColor(Color.green);
		g.fillArc(x,y,r,r,a3,360*count5/count);
		
		g.setColor(Color.white);
		g.fillArc(x,y,r,r,a4,360-a4);
		
		g.setColor(Color.blue);
		g.drawString("参加此考试有"+count+"人",30,30);
		
		}
		g.setColor(Color.magenta);
		g.fillRect(340,150,10,10);
		g.setColor(Color.cyan);
		g.fillRect(340,170,10,10);
		g.setColor(Color.lightGray);
		g.fillRect(340,190,10,10);
		g.setColor(Color.green);
		g.fillRect(340,210,10,10);
		g.setColor(Color.white);
		g.fillRect(340,230,10,10);
		
		g.setColor(Color.black);
		g.drawString("<60",360,160);
		g.drawString("60-70",360,180);
		g.drawString("70-80",360,200);
		g.drawString("80-90",360,220);
		g.drawString("90-100",360,240);
	}
}