Singleton (Java)

<SyntaxHighlight_GeSHi lang="Java"> import java.util.*; import java.io.*; import java.math.*;

class Player {

   public static void main(String args[]) {
       Scanner in = new Scanner(System.in);
       boolean boostIsAvailable=true;
       
       // game loop
       while (true) {
           int x = in.nextInt();
           int y = in.nextInt();
           int nextCheckpointX = in.nextInt(); // x position of the next check point
           int nextCheckpointY = in.nextInt(); // y position of the next check point
           int nextCheckpointDist = in.nextInt(); // distance to the next checkpoint
           int nextCheckpointAngle = in.nextInt(); // angle between your pod orientation and the direction of the next checkpoint
           int opponentX = in.nextInt();
           int opponentY = in.nextInt();
           int thurst = 0;
           String power = "";

           // Write an action using System.out.println()
           // To debug: System.err.println("Debug messages...");

           if(nextCheckpointAngle > 90 || nextCheckpointAngle < -90){
               thurst = 0;
               power = Integer.toString(thurst);
           }else if(nextCheckpointDist > 8500 && boostIsAvailable && nextCheckpointAngle < 3 && nextCheckpointAngle > -2){
               power = "BOOST";
               boostIsAvailable=false;
           }else{
               thurst = 100;
               power = Integer.toString(thurst);
           }
           
           //Logs
           //System.err.println("Dist: "+nextCheckpointDist);
           //System.err.println("Angle: "+nextCheckpointAngle);
           //System.err.println("Boost: "+boostIsAvailable);

           // You have to output the target position
           // followed by the power (0 <= thrust <= 100)
           // i.e.: "x y thrust"
           System.out.println(nextCheckpointX + " " + nextCheckpointY +" "+ power);
       }
   }

} </SyntaxHighlight_GeSHi>