To scan a method boolean in another method

Question

how can i scan a boolean in another method if its true, which parameters should i take..
because the same parameter like in the boolean method leads to the error X,Y cannot be resolved..
public boolean istPunktEnthalten(int X,int Y){
          if (X>=x1 && X<=x2 && Y>=y1 && Y<=y2 ){
                return true;
          return false;
     Rechteck vereinigung(Rechteck r){
               if (istPunktEnthalten(X,Y)){      -------------->X,Y cannot be resolved, so whici param i need?
                    return r;
               }

Answer 1

First off, I would simplify the method like so:
public boolean istPunktEnthalten(int X,int Y)
    return (X>=x1 && X<=x2 && Y>=y1 && Y<=y2 );
}Next of all, when you call it, you don't use X, Y, you use ints or variables that hold ints:
int a = 1;
int b = 2;
System.out.println(istPunktEnthalten(a, b));