Files.createTempFile() and Files.createTempDirectory()

Files.createTempFile() and Files.createTempDirectory()

NIO.2 provides secure and convenient methods to create temporary files and directories with appropriate permissions and unique names.

How it Works

You can specify a prefix, suffix, and optional directory. If no directory is provided, it uses the system's default temporary folder (e.g., /tmp or %TEMP%).

Java Example

import java.nio.file.*;
import java.io.IOException;

public class TempFileExample {
    public static void main(String[] args) throws IOException {
        Path tempFile = Files.createTempFile("myapp_", ".log");
        System.out.println("Temp file: " + tempFile);
        Files.deleteIfExists(tempFile);
    }
}

Output

Temp file: C:\Users\...\myapp_12345.log

Key Points

• Secure temp file creation
• Automatic unique naming
• Supports custom prefix and suffix
• Can specify parent directory