Difference in String declaration

Hello All,
Can any one please tell me whats the difference between following String declarations:
a) String str = "abc";
b) String str = new String( "abc" );
Also please tell me which one is correct way of declaration and in which sence.
Thanks in advance..........

both are different
the first one creates one String object and one reference variable. The second one creates two string objects, one in non-pool memory and the reference variable will refer to it., the second object is the literal that will be placed in the pool.

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We already answered your question why post in a different section?
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String is immutable. In other words, once it is made, the contents of that instance of String cannot be changed (easily). The size and characters cannot be changed, and code can take advantage of this fact to optimize space. Also, once you have a reference to a string, you do not need to worry about it changing at all, so you can eliminate constant tests to verify things such as size in another class that may want to hold onto the string.
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What's the difference between String() - as String - toString();

Hello,
I'm wondering what's the difference between this 3 ways of getting around.

There is a great difference between String(), as String and toString() methods.
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var ss:String = null;
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Difference between String=""; and String =null

I want to know the difference especially the ADVANTAGE between the following-
1. String s="";
String s="ABC"
and
String s;
String s="ABC";
or String s=null;
String s="ABC";
2. Object anyObject;
anyObject-new Object();
and
Object anyObject=null;
anyObject=new Object();

Tanvir007 wrote:
I want to know the difference especially the ADVANTAGE between the following-
1. String s="";s points to the empty string--the String object containing no characters.
String s="ABC"s points to the String object containing the characters "ABC"
String s; Declares String reference varialbe s. Doesn't not assign it any value. If it's a local variable, it won't have a value until you explicitly assign it. If it's a member variable, it will be given the value null when the enclosing object is created.
String s="ABC";Already covered above.
or String s=null;s does not point to any object.
String s="ABC";???
You've already asked this twice.
Are you talking about doing
String s = null;
String s = "ABC";right after each other?
You can't do that. You can only declare a variable once.
If you mean
String s = null;
s = "ABC";It just does what I described above, one after the other.
2. Object anyObject;
anyObject-new Object();
and
Object anyObject=null;
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Another interview question?
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Any ideas why the difference in behavior?
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Hello,
I got the followng result after run the query on SQL Server 2008R2 SP2 Enterprise edition:
SQL Server specific version: Microsoft SQL Server 2008 R2 (SP2) - 10.50.4260.0 (X64) Jul 11 2012 15:47:13 Copyright (c) Microsoft Corporation Enterprise Edition (64-bit) on Windows NT 6.1 <X64> (Build 7601: Service Pack
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Please install the latest Service Pack for SQL Server 2008R2, we can get it from the link below:
How to obtain the latest service pack for SQL Server 2008 R2:
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Is there anylimit for declaring number of public
string in a java file.
I have declared some 3300 Public String in a .java
file as shown below
public class JbnIntlLabel implements Serializable {
public Properties prop = new Properties();
//start of new 2 series labels
public String Text_2A= null;
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3300 such declarations.
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(Note that I do not consider this a great design. Unless you have profiled this under load I would simply keep the values in a hash table and use a named argument to retrieve each value.)
>
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Domain/applications/demo/WEB
-INF/src/com/apollo/services/bean > demo.sh
JbnIntlLabel.java
An exception has occurred in the compiler (1.3.1-rc2).
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java.lang.StackOverflowError
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Hi all,
I want to understand the difference in statements
new String("") and string declared as "".
Is this only a shortcut or is there any other
difference like re-using the string objects created in
the pool?
what is the value in the String instantiated as new
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*protected section.
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private SECTION.
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Please use meaningful subject in future questions and Post in correct forum*
Please learn to use tags around your ABAP
Edited by: Vijay Babu Dudla on Dec 1, 2008 12:37 AM
Edited by: Matt on Dec 1, 2008 4:16 PM

hi,
    Iam really soory people..It wont repeat again.pls guide me in this regard
hi ppl,
what is the difference if i declare attributes under public or protected to access the private method.for both (public or private) section iam getting the same result.
CLASS CL DEFINITION.
*protected section.
public section.
DATA: M TYPE I VALUE 100.
private SECTION.
METHODS: FREE.
ENDCLASS.
CLASS CL IMPLEMENTATION.
METHOD: FREE.
WRITE:/ M.
ENDMETHOD.
ENDCLASS.
CLASS CL1 DEFINITION INHERITING FROM CL.
public section.
METHODS: FREE1.
ENDCLASS.
CLASS CL1 IMPLEMENTATION.
METHOD: FREE1.
WRITE:/ M.
ENDMETHOD.
ENDCLASS.
DATA: OBJ TYPE REF TO CL1.
START-OF-SELECTION.
CREATE OBJECT : OBJ.
END-OF-SELECTION.
CALL METHOD: OBJ->FREE1.
Edited by: Matt on Dec 1, 2008 4:18 PM

Difference in String declaration

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