Understanding Reference data type

Reference data type for class object reference and array reference.

Source Code

		class RefDataType
{
  int rd=5;  
  public static void main(String[] args)
  {
    RefDataType robj = new RefDataType();
    System.out.println(robj.rd);
    int ar[]={1,2};
    System.out.println(ar);
    System.out.println(ar[0]+", "+ar[1]);
  }
}
 

Run Output

5

[I@16c85db

1, 2



Note: The second line could be different in your case as it is just a memory reference