Completed printRange()

It is OK to use the same parameter names (like x) and the same local variable names (like index) in several methods. The scope of parameters and local variables is limited to the method in which they are declared.

class ArrayOps
{
  . . . . // other methods

  // print elements start through end
  void printRange ( int[] x, int start, int end )
  {
    for ( int index=start; index <= end ; index++ )
      System.out.print( x[index] + " " );
    System.out.println();
  }

}

class ArrayDemo
{
  public static void main ( String[] args ) 
  {
    ArrayOps operate = new ArrayOps();
    int[] ar1 =  { -20, 19, 1, 5, -1, 27, 19, 5 } ;
    
    // print elements at indexes 1, 2, 3, 4, 5
    operate.printRange( ar1, 1, 5 );
  }

}      

When printRange() is called, the three actual values given in the call are copied to the parameters of printRange(). The parameter x refers to the array, start gets the value "1", end gets the value "5".