IBM User Guide for Java V7 on Windows > IBM SDK for Java > The Java Native Interface (JNI) > Copying and pinning

A generic way to use the isCopy and mode flags

Here is a generic way to use the isCopy and mode flags. It works with all JVMs and ensures that changes are committed and leaks do not occur.

To use the flags in a generic way, ensure that you:

• Do not use the isCopy flag. Pass in null or 0.
• Always set the mode flag to zero.

A complicated use of these flags is necessary only for optimization. If you use the generic way, you must still consider synchronization. See Synchronization.

Parent: Copying and pinning

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