Java:
Writing a text file
How to:
Using java.nio.file (Standard Library)
Java’s New I/O (NIO) package (java.nio.file) provides a more versatile approach for dealing with files. Here’s a simplistic way to write to a file using Files.write():
import java.nio.file.Files;
import java.nio.file.Paths;
import java.util.Arrays;
import java.util.List;
public class TextFileWriterNIO {
public static void main(String[] args) {
List<String> lines = Arrays.asList("Line 1", "Line 2", "Line 3");
try {
Files.write(Paths.get("example.txt"), lines);
System.out.println("File written successfully!");
} catch (Exception e) {
e.printStackTrace();
}
}
}Output:
File written successfully!Using java.io (Standard Library)
For a more traditional approach, java.io.FileWriter is a good choice for writing text files simply:
import java.io.FileWriter;
import java.io.IOException;
public class TextFileWriterIO {
public static void main(String[] args) {
try (FileWriter writer = new FileWriter("example.txt")) {
writer.write("Hello, World!\n");
writer.append("This is another line.");
System.out.println("File written successfully!");
} catch (IOException e) {
e.printStackTrace();
}
}
}Output:
File written successfully!Using Apache Commons IO
The Apache Commons IO library simplifies many operations, including file writing. Here’s how to write to a file using FileUtils.writeStringToFile():
First, add the dependency to your project. If using Maven, include:
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-io</artifactId>
<version>2.11.0</version> <!-- Check for the latest version -->
</dependency>Then, use the following code to write text to a file:
import org.apache.commons.io.FileUtils;
import java.io.File;
import java.io.IOException;
public class TextFileWriterCommonsIO {
public static void main(String[] args) {
try {
FileUtils.writeStringToFile(new File("example.txt"), "This is text written using Commons IO.", "UTF-8");
System.out.println("File written successfully!");
} catch (IOException e) {
e.printStackTrace();
}
}
}Output:
File written successfully!