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Answer:

for ( int index=0; index <x.length; index++ )

  if ( x[index] > max )

    max = x[index] ;

Using the Method

call by value

class ArrayDemo
{
  public static void main ( String[] args ) 
  {
    int[] ar1 =  { -20, 19, 1, 5, -1, 27, 19, 5 } ;

    ArrayOps operate = new ArrayOps();     // create an ArrayOps object

    int biggest = operate.findMax( ar1 );  // call findMax() with a reference to the array

    System.out.println("The maximum is: " + biggest );
  }

}

The program demonstrates the ArrayOps class.

The program defines a class called ArrayDemo.
ArrayDemo holds the static main() method.
main() creates an array object referenced by ar1
main() creates an ArrayOps object referenced by operate.
An ArrayOps object must be created before its method can be used.
The findMax() method of the ArrayOps object is called with a reference to the array object as an actual parameter.

QUESTION 4:

What, exactly, is ar1 ?