Create, copy, move and delete a file using NIO.

NioTestClass.java

import java.io.BufferedWriter;
import java.io.IOException;
import java.nio.charset.Charset;
import java.nio.file.*;
import java.util.ArrayList;
import java.util.List;

import static java.nio.file.StandardOpenOption.*;
import static java.nio.file.StandardCopyOption.*;

/**
 * Create, copy, move and delete a file using NIO.
 */
public class NioTestClass {

    static final Charset CHARSET = Charset.forName("UTF-8");
    static List<Path> files = new ArrayList<>();

    public static void main(String[] args) {

        String text = "Lorem ipsum!";
        Path filepath;

        // Create a file
        filepath = Paths.get("foo.txt");
        try {
            BufferedWriter writer = Files.newBufferedWriter(filepath, CHARSET, TRUNCATE_EXISTING, CREATE);
            writer.write(text, 0, text.length());
            writer.flush();
        } catch (IOException ioe) {
            System.err.printf("Could not create file: %s%n", ioe.getMessage());
        }
        files.add(filepath);

        // Copy file
        filepath = Paths.get("baz.txt");
        try {
            Files.copy(files.get(0), filepath, REPLACE_EXISTING);
        } catch (NoSuchFileException nsfe) {
            System.err.printf("No such file: %s%n", filepath);
        } catch (IOException ioe) {
            System.err.printf("Could not copy file: %s%n", ioe.getMessage());
        }
        files.add(filepath);

        // Move file
        filepath = Paths.get("baz.txt");
        try {
            Files.move(files.remove(0), filepath, REPLACE_EXISTING);
        } catch (IOException ioe) {
            System.err.printf("Could not move file: %s%n", ioe.getMessage());
        }
        files.add(filepath);

        // Delete files
        try {
            for (Path fp : files) {
                Files.deleteIfExists(fp);
            }
        } catch (IOException ioe) {
            System.err.printf("Could not delete file: %s%n", ioe.getMessage());
        }
    }
}