Just want to know it this small code is right

Question

Hello everyone, im back :P
well, i've been doing exercises, but i don't have the solution yet...so could you tell me if this code is right? thanks.
About the constructors etc..i think its right, but i not sure about the last method ( distanceFromTwoPoints() )
If i'd like to test this class, i would ask for 4 coord. (x1,y1) and (x2, y2)..
And solved the distance between those two points..well
I don't understand..
On that code how can i calculate the distance from two points if i just have x1 and y1, i mean ...when i wrote that boolean method ( if the two points are equal) the the "p" variable reference is pointing to x1 and y1 , right? maybe that boolean method is wrong too, cuz i want to compare (x1, y1 ) with (x2, y2) well....when i wrote :
this.x1 == p.x1 etc both are references to x1 and y1, so returns always true.
Do i need to write a setMethod to change the values ?
Is that code comparing two points? thats all i want to know...if yes, so how can i test it?
public class Point {
     private double x1;
     private double y1;
     public Point(final double x1, final double y1){
          this.x1 = x1;
          this.y1 = y1;          
     public double getX1() {
          return x1;
     public double getY2() {
          return y1;
     public boolean isEqual(final Point p){
          return (this.x1 == p.x1 && this.y1 == p.y1);
     public double distanceFrom2Points (int x1, int y2, Point p){
          return Math.sqrt((this.x1 - p.x1)*(this.x1 - p.x1) + (this.y1 - p.y1)*(this.y1 - p.y1));
I think this code is just working with two coord. x1 and y1 :S where do i put x2 and y2?
"p" is a reference to the x1 and y1 variables, so where are the x2 and y2?
im confused :P
thanks

Answer 1

public class Point {
     private double x;
     private double y;
     public Point(final double x, final double y){
          this.x = x;
          this.y = y;          
     public double getX() {
          return x;
     public double getY() {
          return y;
     public boolean isEqual(final Point p){
          return (this.x == p.x && this.y == p.y);
     public double distanceFrom2Points ( Point p){
return Math.sqrt((this.x - p.x) * (this.x - p.x) + (this.y - p.y) * (this.y - p.y));
public class TestingPoint {
     public static void main(String[] args) {
          System.out.print("X1: ");
          double x1 = Teclado.doubleLido();
          System.out.print("Y1: ");
          double y1 = Teclado.doubleLido();  
          //Teclad.intLido() reads from the console, something like:
         //Keyboard.intRead(); we use that.
          System.out.print("X2: ");
          double x2 = Teclado.doubleLido();
          System.out.print("Y2: ");
          double y2 = Teclado.doubleLido();
          Point p1 = new Point(x1, y1);
          Point p2 = new Point(x2, y2);
    double distance = p2.distanceFrom2Points(p1.distanceFrom2Points
                                               (x1,x2));
     System.out.println("The distance is "+distance);
}the compilation ERROR says: The method distanceFrom2Points(Point) in the type Point is not applicable for the arguments (double, double)
these are the two classes.
What is wrong ?
thanks!