Java file write read

File writing: For writing files, we will have two ways to do this, one for writing a file without a specific encoding and another to write with a particular encoding in this case in UTF The second way is to write a file with a specific coding is presented below: import java. BufferedWriter; import java. FileNotFoundException; import java. FileOutputStream; import java. IOException; import java. OutputStreamWriter; import java. UnsupportedEncodingException; import java.

Previous post. Next post. Erik at am. Then the user could have access to the text, but I don't know how to convert the text to a file that would be automatically downloaded.

Frischling I could do it on the fly. However, I would prefer to save it. You can save it to an outside accessible path like a temp folder or specifically assigned folder for that. Show 1 more comment.

Active Oldest Votes. For example, you could have the following in your configuration: myapp. Improve this answer. Add a comment. Sign up or log in Sign up using Google. Sign up using Facebook. Sign up using Email and Password. Post as a guest Name. Email Required, but never shown. The Overflow Blog. Podcast Helping communities build their own LTE networks. Podcast Making Agile work for data science. Featured on Meta. You can create a file, append to a file, or write to a file by using the newOutputStream Path, OpenOption This method opens or creates a file for writing bytes and returns an unbuffered output stream.

The method takes an optional OpenOption parameter. If no open options are specified, and the file does not exist, a new file is created. If the file exists, it is truncated. The following example opens a log file. If the file does not exist, it is created.

If the file exists, it is opened for appending. The ByteChannel interface provides basic read and write functionality. A SeekableByteChannel is a ByteChannel that has the capability to maintain a position in the channel and to change that position.

A SeekableByteChannel also supports truncating the file associated with the channel and querying the file for its size. The capability to move to different points in the file and then read from or write to that location makes random access of a file possible.

See Random Access Files for more information. Both newByteChannel methods enable you to specify a list of OpenOption options. The same open options used by the newOutputStream methods are supported, in addition to one more option: READ is required because the SeekableByteChannel supports both reading and writing.