Practice Exercises Java - Learn to program performing exercises with Java

Practice Exercises Java

Learn to program performing exercises with Java

12 Lessons Java with the Solutions - 228 Exercises Java with the solutions
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File splitter - Practice Exercises Java

Lesson 8:

File management

Exercise 8.28:

File splitter


Create a program to split a file (of any kind) into pieces of a certain size. ir must receive the name of the file and the size as parameters. For example, it might be used by writing:

split myFile.exe 2000

If the file "myFile.exe" is 4500 bytes long, that command would produce a file named "myFile.exe.001" 2000 bytes long, another called "myFile.exe.002" 2000 bytes long, and another named "myFile.exe.003" 500 bytes long.

Source Code:

public class Main
	public static void main(String[] args)
	{ myFile; myNewFile;

		String nameFile;
		int amountRead;
		int count = 1;

		if (args.length == 2)
			nameFile = args[0];
			BUFFER_SIZE = Integer.parseInt(args[1]);

			byte[] data = new byte[BUFFER_SIZE];

				myFile = File.OpenRead(nameFile);
					amountRead =, 0, BUFFER_SIZE);
					myNewFile = File.Create(nameFile + (new Integer(count)).toString("000"));
					myNewFile.write(data, 0, amountRead);

				} while (amountRead == BUFFER_SIZE);
			catch (RuntimeException fileError)
				System.out.println("ERROR has ocurred while executing: " + fileError.getMessage());
			System.out.println("The parameters are incorrects");
			System.out.println("usage: splitfile namefile sizeinbytes");
Exercisey 8.28

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