little help

hi i've tried radial targeting but I kepp getting a error message. Could you guys just check my code.

package argeaer; import robocode.*; //import java.awt.Color;

/**

* Arg - a robot by (your name here)
*/

public class Arg extends Robot { /** * run: Arg's default behavior */ public void run() { // After trying out your robot, try uncommenting the import at the top, // and the next line: //setColors(Color.red,Color.blue,Color.green); while(true) { // Replace the next 4 lines with any behavior you would like ahead(100); turnGunRight(360); back(100); turnGunRight(360); } }

/** * onScannedRobot: What to do when you see another robot */ /**This function predicts the time of the intersection between the bullet and the target based on a simple iteration. It then moves the gun to the correct angle to fire on the target.**/ void doGun() {

   long time;
   long nextTime;
   Point2D.Double p;
   p = new Point2D.Double(target.x, target.y);
   for (int i = 0; i < 10; i++){
       nextTime = 
   (intMath.round((getRange(getX(),getY(),p.x,p.y)/(20-(3*firePower))));
       time = getTime() + nextTime;
       p = target.guessPosition(time);
   }
   /**Turn the gun to the correct angle**/
   double gunOffset = getGunHeadingRadians() - 
                 (Math.PI/2 - Math.atan2(p.y - getY(), p.x - getX()));
   setTurnGunLeftRadians(normaliseBearing(gunOffset));

}

double normaliseBearing(double ang) {

   if (ang > Math.PI)
       ang -= 2*PI;
   if (ang < -Math.PI)
       ang += 2*Math.PI;
   return ang;

}

public double getrange(double x1,double y1, double x2,double y2) {

   double x = x2-x1;
   double y = y2-y1;
   double h = Math.sqrt( x*x + y*y );
   return h;	

}

/** * onHitByBullet: What to do when you're hit by a bullet */ public void onHitByBullet(HitByBulletEvent e) { turnLeft(90 - e.getBearing()); }

}

Please, format yours code and in future use tag <syntaxhighlight>. What kind of error message you get?