求助java2d 画曲线图？急！！！大神们帮忙~~~~

谁能帮忙给一个上面图片的例子。代码~真的很着急啊，大婶们帮帮忙啊~~ java2D 曲线图
[解决办法]

来拿分。。

package test;

import java.awt.Canvas;
import java.awt.Color;
import java.awt.Font;
import java.awt.Graphics;

import javax.swing.JFrame;


public class Test2D {
    
private JFrame jf;
    private myCanvas cv;

    //构造函数
    public Test2D(){
        this.jf=new JFrame();
        this.cv=new myCanvas();
        jf.add(cv);
        jf.setSize(600,400);
        jf.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        jf.setVisible(true);  
    }
    
    /**
     * 函数逻辑，获取x轴点集合
     * @return
     */
    public int[] getX(){
    //TODO
    return null;
    }

    public int[] getY(){
    //TODO
    return null;
    }
    
    //测试
public static void main(String[] args){
Test2D test=new Test2D();

int[] x={50,100,150,200,250};
int[] y={310,310-79,310-152,310-10,310-200};

test.cv.setX(x);
test.cv.setY(y);

}

//画布
class myCanvas extends Canvas{
private int x[];
private int y[];  
private int xPoint;
private int yPoint;
private int height;
private int weight;

public myCanvas(){

}

public void setX(int[] x) {
this.x = x;
}

public void setY(int[] y) {
this.y = y;
}

public myCanvas(int[] x,int[] y){
this.x=x;
this.y=y;
}

public void paint(Graphics g){
Color c=new Color(255,255,255);
g.setColor(c);
//g.fillRect(xPoint,yPoint,height,weight);
g.fillRect(50,10,450,300);

//红线
g.setColor(new Color(255,0,0));
g.drawPolyline(x,y,5);

//黑线
g.setColor(new Color(0,0,0));
//g.drawPolyline(x,y,5);
}
}

}