Java IO & NIO - Files.write() Examples

Java IO & NIO Java Java API 

Class:

java.nio.file.Files

Methods:

public static Path write(Path path,
                         byte[] bytes,
                         OpenOption... options)
                  throws IOException

Writes bytes to a file.

Parameters:

path - the path to the file

bytes - the byte array with the bytes to write

options - options specifying how the file is opened

Returns:

the path

public static Path write(Path path,
                         Iterable<? extends CharSequence> lines,
                         OpenOption... options)
                  throws IOException

public static Path write(Path path,
                         Iterable<? extends CharSequence> lines,
                         Charset cs,
                         OpenOption... options)
                  throws IOException

Parameters:

path - the path to the file

lines - an object to iterate over the char sequences

cs - the charset to use for encoding

options - options specifying how the file is opened

Returns:

the path

Examples

package com.logicbig.example.files;

import java.io.IOException;
import java.nio.file.Files;
import java.nio.file.Path;

public class WriteExample {

    public static void main(String... args) throws IOException {
        Path path = Files.createTempFile("test-file", ".txt");
        Files.write(path, "some test content...".getBytes());

        byte[] bytes = Files.readAllBytes(path);
        System.out.println(new String(bytes));
    }
}

Output

some test content...

package com.logicbig.example.files;

import java.io.IOException;
import java.nio.file.Files;
import java.nio.file.Path;
import java.util.Arrays;

public class WriteExample2 {

    public static void main(String... args) throws IOException {
        Path path = Files.createTempFile("test-file", ".txt");
        Iterable<String> iterable = Arrays.asList("line1", "line2");
        Files.write(path, iterable);

        byte[] bytes = Files.readAllBytes(path);
        System.out.println(new String(bytes));

    }
}

Output

line1
line2