Java Arrays, Objects, Methods

CS 161 - Java

Array Manipulation

In class example of some array manipulation

Write a Java class named Arrays.java. This class should have the following methods.

public void listArgs( String [] args)
To list out the arguments in an array of Strings
public long product( int [] intArray )
To compute the product of the integers in the array intArray

public static void main( String[] args )
Should have the following code:

if (args.length == 0) {
  System.out.println("usage: Arrays [integers]");
}
else {
  Arrays inst = new Arrays();
  inst.listArgs(args);

  int input[] = new int[args.length];
  for (int i = 0; i < args.length; i++) {
    input[i] = Integer.parseInt(args[i]);
  }
  System.out.print("product = ");
  long answer = inst.product(input);
  System.out.println(answer);
}

jwd