myshape.java

能够运用java完成画图程序

import java.awt.*;
import java.awt.Graphics;
import java.lang.Object;
import java.math.*;
abstract class MyShape extends Object
{
private int x1,y1,x2,y2;
MyShape()
{
	x1=(int)(Math.random()*500);
	y1=(int)(Math.random()*500);
	x2=(int)(Math.random()*500);
	y2=(int)(Math.random()*500);
}

MyShape(int x_1,int y_1,int x_2,int y_2)
{
	x1=x_1;
	y1=y_1;
	x2=x_2;
	y2=y_2;	
}
	
public void setPoint1(int x_1,int y_1)	
{
	x1=x_1;
	y1=y_1;
}

public void setPoint2(int x_2,int y_2)
{
	x2=x_2;
	y2=y_2;
}

public void setPoint(int x_1,int y_1,int x_2,int y_2)
{
	x1=x_1;
	y1=y_1;
	x2=x_2;
	y2=y_2;
}

public int getX1()
{
	return x1;
}
public int getY1()
{
	return y1;
}
public int getX2()
{
	return x2;
}
public int getY2()
{
	return y2;
}
public   abstract void draw(Graphics g);

	
}