Mit Java in eine Textdatei schreiben

import java.io.File;
import java.io.FileWriter;
import java.io.IOException;
import java.util.logging.Level;
import java.util.logging.Logger;
 
public class SimpleFileWriter
{
 
  static final Logger logger = Logger.getLogger(SimpleFileWriter.class.getName());
 
  public static void writeFile(String pathName, String content) throws IOException
  {
    File file = new File(pathName);
    try (FileWriter writer = new FileWriter(file, true))
    {
      writer.write(content);
      writer.flush();
    }
  }
 
  public static void main(String[] args)
  {
    try
    {
      writeFile("C:/Temp/test.txt", "Hello World!" + System.getProperty("line.separator", "\r\n"));
      System.out.println("Data was successfully written.");
    }
    catch (IOException ex)
    {
      logger.log(Level.WARNING, ex.getLocalizedMessage());
    }
  }
}