Cannot pass String by reference !

I have the same problem. I understood that if you pass "jxxxarray" or "String" they are passed by reference but I could not make it working. Here are the 2 parts of my code:
JAVA (The call to native function):
String toto = new String("toto");
int nativeCodeReturned = finreadGetFCRAProperties(toto)
System.out.println("fcra name: " + toto);
==> this prints "toto" but should print "FCRA1" !!!
C (The native function):
JNIEXPORT jint JNICALL
Java_com_trustedlogic_qa_CBridge_finreadGetFCRAProperties(JNIEnv
*env, jobject obj, jstring FCRAName) {
FCRAName is modified and now contains "FCRA1" in jstring format (I used the appropriate method to do that, and verified the content)
Please help !!!
Thx in advance,
Eg\\*

Please help !!!You can't modify the string, that is why strings are immutable.
So what you are doing is trying to change the reference (not the string that the reference points to.) And the reference is passed by value.
This is exactly the same thing that happens in java. It has nothing to do with JNI.

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Hi, I am unable to pass a string parameter by reference from a subsequence to its caller. Is there a trick in doing this or is it not possible?
Thank you,
Chris
Solved!
Go to Solution.

Right Click on the parameter in the subsequence.
Make sure Pass By Reference is checked.
jigg
CTA, CLA
teststandhelp.com
~Will work for kudos and/or BBQ~

How can I pass a String by reference in java?

Hello!
My question is how to pass a String by reference in java.
I tried to declare my variable, instead of using "String xxx = "f";", I used "String xxx = new String ("f");" :
public static void main (String []args)
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Thanks!

Tolls wrote:
Which is why I said:
Which is why you only managed to change what 'text' referred to in the methodExcept that's not why. Even if String was mutable, doing text = whatever; would have the same effect; it would change what that variable refers to in the method, but it would not change the object's state.
I meant that, since there was no way to actually change the data (ie the char[] or whatever) within the object 'text' referred to, the OP was attempting to change what 'text' referred to and hoping it would be reflected outside the method...which we know won't happen as Java is pass-by-value.\Ah, now I see.
These by-value/by-reference threads tend to get confusing, because usually the person is passing a String, so the immutability of String tends to get in the way and just muddy the waters.

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Hi, I'm getting weird thing in resultset. When I pass String which has single quote value in it to a split function , it returns rows with double quote.
For example following string:
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Returns:
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@List varchar(8000),
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As
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Declare @item varchar(4000),
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fixed the issue by using Replace function like
Replace(value,'''''','''')
Big Thanks Patrick Hurst!!!!! :)
Though I came to another issue which I posted here:
https://social.msdn.microsoft.com/Forums/sqlserver/en-US/a26469cc-f7f7-4fb1-ac1b-b3e9769c6f3c/split-function-unable-to-parse-string-correctly?forum=transactsql
ZK

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--- cut here ---
CREATE OR REPLACE TYPE test_obj_t AS OBJECT
num INTEGER,
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--- cut here ---
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Cheers,
Andy.

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===================
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actually my sir asked me the same question & I gave
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cupofjava666 wrote:
Need to know how to pass strings to doubles and strings to ints
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select case when connect_by_isleaf = 1 then 0
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I write code the following:
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Edited by: 930927 on 29 เม.ย. 2555, 9:02 น.

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Cannot pass String by reference !

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