.intern() ?

[Jareware]

What does .intern() do when handling strings? For example, if I have a string variable called myString and I do the following:

someOtherVariable = myString.intern();

What does it store in the other one?


-JR-

[Dillinger4]

The signature of the method is public String intern(); so i assume that it returns a String but i noticed also that it is declared native.

[Jareware]

:o Ahem, I'm pretty new to java... What would that be in english? :D


-JR-

[Jareware]

Oh, I'm sorry, if I presented the problem the wrong way:

What does it do to the string? (i.e. Trim() takes off preceeding and following spaces)



-JR-

[Dillinger4]

You can do somthing like this to run a native method, which is a method from another language. Since Java can only run C++ i guess that it is a C++ method, im not too sure though.

public class Native{
/* the static initializer ensures that the native library
will be loaded before the methood is called
*/

static{
System.loadLibrary(NativeLibrarylib);
}

public void nativeMethod(); //native method protype
}

[Jareware]

Originally posted by Jareware
Oh, I'm sorry, if I presented the problem the wrong way:

What does it do to the string? (i.e. Trim() takes off preceeding and following spaces)



-JR-

[Dillinger4]

That i have no clue. My documentation doesn't say. :(

[Jareware]

I see... Have you tried using it?


-JR-

[Dillinger4]

Nope. Never had a need too. :p

[Jareware]

Well, me neither, I just need to know what it does :)


-JR-

[crptcblade]

public String intern()Returns a canonical representation for the string object.
A pool of strings, initially empty, is maintained privately by the class String.

When the intern method is invoked, if the pool already contains a string equal to this String object as determined by the equals(Object) method, then the string from the pool is returned. Otherwise, this String object is added to the pool and a reference to this String object is returned.

It follows that for any two strings s and t, s.intern() == t.intern() is true if and only if s.equals(t) is true.

All literal strings and string-valued constant expressions are interned. String literals are defined in §3.10.5 of the Java Language Specification

Returns:
a string that has the same contents as this string, but is guaranteed to be from a pool of unique strings.


:)

[Jareware]

K, thanks, I'll try and figure out what you meant... :D


-JR-