Difference  between null vector and empty Vector

What is the diffrence between null vector and empty vector.

null vector means the JVM doesn't allocate memory.It doesn't exist
in memory. NO instance!
empty vector means the JVM allocated memory.It exists in memory.
it's a instance than is accessabel.But only have on elements.
GL&HF.

Similar Messages

  • Difference between null string and empty string??

    what is the major difference between null string and an empty string??
    I wrote the following simple program and I could see some different output.
    Other than that, any other differences that we should pay attention to???
    C:\>java TestCode
    Hello
    nullHello
    public class TestCode
         public static void main(String[] s)
         {     String s1 = "";
              String s2 = null;
              System.out.println(s1 + "Hello");
              System.out.println(s2 + "Hello");
    }

    The difference is that an empty String is just empty but a null String has no value (i.e. it is not instantiated) this has signifigance since all Strings are objects.

  • What is difference between Null String and Empty String ?

    Hi
    Just i have little confusion that the difference bet'n NULL String and Empty String ..
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    For the same reason I think it's okay to say "null
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  • What is the difference between String Constant and Empty String Constant

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  • Difference between null layout and absolutelayout

    hello
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    http://www.google.com/search?q=absolutelayout
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  • OSB to Object Types: difference between NULL value and not available

    Hello all,
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      if p_emp.EMP_ID is null
      then
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      then
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    Darn...
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  • Differnce between null string and an empty string??

    what is the major difference between null string and an empty string??
    I wrote the following simple program and I could see some different output.
    Other than that, any other differences that we should pay attention to???
    C:\>java TestCode
    Hello
    nullHello
    public class TestCode
         public static void main(String[] s)
         {     String s1 = "";
              String s2 = null;
              System.out.println(s1 + "Hello");
              System.out.println(s2 + "Hello");
    }

    There's a big difference between the two. A null String isn't pointing to an object, but an empty String is. For example, this is perfectly fine:
    public class TestCode
        public static void main(String[] args)
            String s = "";
            System.out.println(s.length());
    } It prints out 0 for the length of the String, just as it should. But this code will give you a NullPointerException:
    public class TestCode
        public static void main(String[] args)
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  • Difference between Null and null?

    What is the difference between null and NULL?
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    Thanks,

    veryConfused wrote:
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  • Difference between Null in c and Null in Oracle

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  • What is the difference between "= NULL" and "IS NULL" in SQL?

    Hi,
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  • What's difference between JPanel.remove(); and JPanel = null

    nice day,
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    Message was edited by:
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    Answer for the master!!!
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    Karthick

  • Difference between conn.close() and conn=null;

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