public void close() throws IOException {if (isOpen) {isOpen = false;try {dump();} finally {try {channel.truncate(fileLength);} finally {try {channel.close();} finally {fos.close();}}}}}
public void close() throws IOException{if (isOpen){isOpen = false;try{dump();}finally{try{channel.truncate(fileLength);}finally{try{channel.close();}finally{fos.close();}}}}}