java0503 - プログラム倉庫

import java.awt.*;
import java.awt.event.*;

class game0503 extends Frame{
int lightx,lighty;
int x,y;  

public static void main(String [] args) {
        Frame f=new game0503();
        f.setTitle("game0503");
        f.setSize(700,700);
        f.setBackground(Color.blue);
        f.setVisible(true);
    }

game0503(){
lightx=300;
lighty=300;
x=100;
y=200;
System.out.println(met(x,y,lightx,lighty));
addWindowListener(new stopwin());
}


class stopwin extends WindowAdapter{
    public void windowClosing(WindowEvent we){System.exit(0);}
}  


public void paint(Graphics g){  
g.drawLine(x,y,100,300);
}


double met(int x,int y,int ligtx,int lighty){
double e;
e=(x-lightx)*(x-lightx);
e=e+(y-lighty)*(y-lighty);
e=Math.sqrt(e);
return e;
}
}