(Convert a text file into UTF) Write a program that reads lines of characters from a text file and writes each line as a UTF-8 string into a binary file

/*********************************************************************************
* (Convert a text file into UTF) Write a program that reads lines of characters  *
* from a text file and writes each line as a UTF-8 string into a binary file.    *
* Display the sizes of the text file and the binary file. Use the following      *
* command to run the program:                                                    *
*                                                                                *
* java Exercise17_04 Welcome.java Welcome.utf                                    *
*********************************************************************************/
import java.io.*;
import java.util.Scanner;

public class Exercise_17_04 {
	public static void main(String[] args) throws IOException {
		// Check java usage
		if (args.length != 2) {
			System.out.println("Usage: java Exercise_17_04 SourceFile TargetFile");
			System.exit(1);
		}

		// Create a file and check if it exists
		File file = new File(args[0]);
		if (!file.exists()) {
			System.out.println("The File " + args[0] + " does not exist.");
			System.exit(2);
		}

		try (
			// Read lines of characters from text file and 
			// write each line as UTF-8 string to binary file
			Scanner input = new Scanner(file);
			DataOutputStream output = 
				new DataOutputStream(new FileOutputStream(args[1]));
		) {
			while (input.hasNext())
				output.writeUTF(input.nextLine());
		}
	}
}

Welcome.java

public class Welcome {
	public static void main(String[] args) {
		// Display message Welcome to Java! on the console
		System.out.println("Welcome to Java!");
	}
}