How to write content on a text file using java?

Question

i am having a program in java.which system.out some strings,i need to save each of them in a text file
it is showing in a format
ruo1 row2 row3
i want it in

Answer 1

Very quick code. I apologize if there are compile errors.

 import java.io.FileWriter;
  import java.io.IOException;  
  public class TestClass {
      public static String newLine = System.getProperty("line.separator");
      public static void main(String[] a) {
        FileWriter writer;
        try {
          writer = new FileWriter("test.txt");
          for(int i=0;i<3;i++){
            writer.write(row+i+newLine);
          }
          writer.close();
        } catch (IOException e) {
          e.printStackTrace();
        }

      }
    }