Java Write to File Example

Java 8 code examples to write content into file. You may find examples of reading files using java 8 APIs in linked blog post.

Write to file using BufferedWriter

BufferedWriter is used to write text to a character or byte stream. Before printing the characters, it stores the characters in buffer and print in bunches. Without buffering, each invocation of a print() method would cause characters to be converted into bytes that would then be written immediately to the file, which can be very inefficient.

A sample use of writing content to file using java 8 APIs is –

//Get the file reference
Path path = Paths.get("c:/output.txt");

//Use try-with-resource to get auto-closeable writer instance
try (BufferedWriter writer = Files.newBufferedWriter(path)) 
{
    writer.write("Hello World !!");
}

Write to file using Files.write()

Using Files.write() method is also pretty much clean code.

String content = "Hello World !!";
Files.write(Paths.get("c:/output.txt"), content.getBytes());

Above both methods are good for almost any purpose – in general programming needs.

Happy Learning !!