Byte array file java

In this program, you'll learn to convert a File object to byte[] and vice-versa in Java. To understand this example, you should have the knowledge of the following Java programming topics:. Before we convert a file to byte array and vice-versa, we assume we have a file named test.

Then, inside the try block, we read all the bytes from the given path using readAllBytes method. When you run the program, the contents of test.

In the above program, we've used the same method as Example 1 to read all the bytes from the File stored in path. These bytes are stored in the array encoded.

Then, we simply use the Files ' write method to write the encoded byte array to a File in the given finalPath. Course Index Explore Programiz. Java for Loop. Arrays in Java. Interfaces in Java. Java ArrayList. Popular Examples Check prime number. Print the Fibonacci series. Print Pyramids and Patterns. Multiply two matrices. Find the standard deviation. Reference Materials String. Start Learning Java.

Explore Java Examples. Active 3 years ago. Viewed k times. With Java: I have a byte[] that represents a file. How do I write this to a file ie. Improve this question. Add a comment. Active Oldest Votes. Improve this answer. Community Bot 1 1 1 silver badge. Bemrose Well, it probably manages to clean up resources in the sad case. If writing fails, you will leak the output stream. Show 2 more comments. SharkAlley SharkAlley How about charset in this case?

FileOutputStream documentation does not mention this so this is probably platform-specific. I'd guess it is UTF-8 in the absolute most cases. Another solution using java. TBieniek TBieniek 4, 2 2 gold badges 22 22 silver badges 29 29 bronze badges. TB How about charset in this case? What ever you said was true, I understood my mistake. Also since Java 7, one line with java. Files: Files. EngineerWithJava EngineerWithJava 1, 2 2 gold badges 13 13 silver badges 18 18 bronze badges.

You could use Paths. Halil I don't think that's right. In other words, it opens the file for writing, creating the file if it doesn't exist, or initially truncating an existing regular-file to a size of 0. Voicu Voicu I tried using this and it caused problems with bytes that weren't UTF-8 characters, so I would be careful with this one if you're trying to write individual bytes to build a file, for example.

Gareth Davis Gareth Davis Alexey Subach Piyush Rumao Piyush Rumao 3 3 silver badges 7 7 bronze badges. Thanks for answer.. Hi SRam, that solely depends on your application why you are doing the conversion and in which format you want the output, I would suggest to go for a.

I know it's done with InputStream Actually, you'd be writing to a file output Powerlord Powerlord File; import java. FileInputStream; import java.