java declaration not clear

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  • nilotpal sarkar
    New Member
    • Feb 2012
    • 2
    #1

    java declaration not clear

    I got a declaration like this.

    Object obj=constructor .newInstance(ne w Object[] {"abc"});
    //constructor is a object of Constructor class(using reflection)

    i am not clear with the declarartion like this.can some1 explain what is in the brace{"abc"}, as well as the complete declaration in detail.
    thanx in advance.
    Tags: None
    • r035198x
      MVP
      • Sep 2006
      • 13225
      #2
      It's just a short cut of
      [code=java]
      Object[] objectArray = new Object[] {"abc"};
      Object obj=constructor .newInstance(ob jectArray);
      [/code]
      Now,
      [code=java]
      Object[] objectArray = new Object[] {"abc"};
      [/code]
      Is itself a shortcut of creating a new array and populating it at the same time.
      e.g if I wanted an array with the integers 0, 3, 5, 1, 9 I could do it as follows
      [code=java]
      int[] rzero = new int[5];
      rzero[0] = 0;
      rzero[1] = 3;
      rzero[2] = 5;
      rzero[3] = 1;
      rzero[4] = 9;
      rzero[5] = 8;
      [/code]
      Or the shortcut

      [CODE=java] int[] rzero = new int[]{0,3,5,1,9,8};[/CODE]

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