static < K , V > void writeMap ( Map < K , V > map , ObjectOutputStream stream ) throws IOException { stream . writeInt ( map . size ( ) ) ; for ( Map . Entry < K , V > entry : map . entrySet ( ) ) { stream . writeObject ( entry . getKey ( ) ) ; stream . writeObject ( entry . getValue ( ) ) ; } }
Stores the contents of a map in an output stream as part of serialization . It does not support concurrent maps whose content may change while the method is running .