MessageFormat.format - thread - vital issue safety

Hello Forum

This question is mostly on the function * "public static String format (string pattern, object... arguments)" * message class format. No information is given in the Javadoc for this function on the thread safety. However a generic message for the entire class is given in the javadoc indicating that the - * 'Message formats are not synchronized. It is recommended to create instances of separate format for each thread. If multiple threads simultaneously access a format, it must be synchronized externally. » *

For this reason, I believe that scan code as Fortify tools catch this function as being the lack of security of the threads for web applications.

However, if you look at the source decompiled service - no shared object being accessible. The source decompiled this function is less in -.

public static String format + (string pattern, object... arguments) {+
MessageFormat temp = new MessageFormat (pattern);
Return temp.format (arguments);
+}+

Here won't access any object shared, a new object is created in the static method and the same is used for formatting. This decompiled version indicates that this method is indeed thread-safe (since no shared object is present and each pile method in each thread will have its own copy of parameters MessageFormat. No sharing doesn't happen).

Could you tell us if this is the case in the current scenario. Actually, this particular format method is thread-safe compared to other methods of format.

concerning
Phani Lanka

user10855645 wrote:
If Javadoc is much more descriptive around this feature it would be useful.

It is perfectly clear, as I have indicated above.

Many tools of scanning of code as Fortify catch wrongly this type of function (MessageFormat.format) containing the race condition critical.

Change the javadoc won't change.

Tags: Java

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