question: @ Override public synchronized void put ( String key , Entry entry ) { pruneIfNeeded ( entry . data . length ) ; File file = getFileForKey ( key ) ; try { FileOutputStream fos = new FileOutputStream ( file ) ; CacheHeader e = new CacheHeader ( key , entry ) ; e . writeHeader ( fos ) ; fos . write ( entry . data ) ; fos . close ( ) ; putEntry ( key , e ) ; return ; } catch ( IOException e ) { } boolean deleted = file . delete ( ) ; if ( ! deleted ) { VolleyLog . d ( "Could not clean up file %s" , file . getAbsolutePath ( ) ) ; } }
target:  Puts the entry with the specified key into the cache.