FileTest.java

import java.io.FileWriter;
import java.io.IOException;
import java.io.PrintWriter;

public class FileTest {
  public static void main(String[] args) throws IOException {
    int[] numbers = new int[] {1,2,3,4,5};

    try (PrintWriter writer = new PrintWriter(new FileWriter("zopa.txt"))) {
      for (int number : numbers) {
        writer.println(number);
      }
    }
  }
}