Vector class

[starparham]

با سلام
دوستان کسی میدونه کد زیر دقیقا چ کاری انجام میده؟؟؟
ممنون از کمکتون

public class Vector implements WritableComparable<Vector> {

 

 private double[] vector;

 

 public Vector() {

  super();

 }

 

 public Vector(Vector v) {

  super();

  int l = v.vector.length;

  this.vector = new double[l];

  System.arraycopy(v.vector, 0, this.vector, 0, l);

 }

 

 public Vector(double x, double y) {

  super();

  this.vector = new double[] { x, y };

 }

 

 @Override

 public void write(DataOutput out) throws IOException {

  out.writeInt(vector.length);

  for (int i = 0; i < vector.length; i++)

   out.writeDouble(vector[i]);

 }

 

 @Override

 public void readFields(DataInput in) throws IOException {

  int size = in.readInt();

  vector = new double[size];

  for (int i = 0; i < size; i++)

   vector[i] = in.readDouble();

 }

 

 @Override

 public int compareTo(Vector o) {

 

  boolean equals = true;

  for (int i = 0; i < vector.length; i++) {

     int c = vector[i] - o.vector[i];

     if (c != 0.0d) {

     return c;

  }

  return 0;

 }

   // get and set omitted

 

}