Code example for BlockingQueue

Methods: clear

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		} 
	} 
 
	public void close() { 
		helper.close();
		dbCache.clear();
	} 
	 
	class MySQLiteOpenHelper extends SQLiteOpenHelper{
		 
		public MySQLiteOpenHelper(Context _context){
			super(_context, DATABASE_NAME, null, VERSION);
		} 
 
		public MySQLiteOpenHelper(Context context, String name,
				CursorFactory factory, int version) {
			super(context, name, factory, version);
		} 
 
		@Override 
		public void onCreate(SQLiteDatabase db) {