Ok, I found some more information. Java attempts to reduce the usage of
memory and and CPU time by doing what is called 'interning' of Strings.
Basically with interning, the JVM keeps a single copy of identical Strings.
All String literals are interned at compile time. However, Strings created
at runtime using the new keyword will not be interned. Therefore:
String str = "Hello" will benefit from interning and save memory,
but
String str = new String("Hello") will not benefit from intening and will
create a brand new object even if identical strings exist.
See http://mindprod.com/jgloss/interned.html for more details.
On Wed, Nov 25, 2009 at 13:03, Andre Brown <[email protected]> wrote:
> Both statements accomplish the same thing - they both create a string
> object. The first statement creates the string by presenting a String
> Literal. When the complier encounters a String Literal in the code, it
> creates a String Object with the value presented in the quotes. See -
> http://java.sun.com/docs/books/tutorial/java/data/strings.html. Based on
> the foregoing, I don't believe there is a difference in memory usage. I'll
> keep looking into it to see if there is anything I'm missing.
>
>
> On Wed, Nov 25, 2009 at 07:49, analyn flores <[email protected]>wrote:
>
>> Which saves more memory?
>>
>> String str = "";
>> or
>> String str = new String();
>>
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