Delete a File in Java

This Code can be used to delete a list of files and in turn the reponse will be a String containg Success or error for every single file.

import java.io.File;
import org.apache.log4j.Logger;

public class Testing {
 private static final Logger logger = Logger.getLogger(Testing.class);

 //This function will delete the file and will return the status. 
 private static boolean deletefile(String file) {
  File f1 = new File(file);
  boolean success = f1.delete();

  if (!success) {
   logger.debug("Deletion failed.");
   System.exit(0);

  } else {
   logger.debug("File deleted.");
  }
  return success;
 }

 public static void main(String[] args) {
  boolean resultVal;
  StringBuffer result = new StringBuffer();
  if (args[0].length() < 0) {
   logger.debug("File has not been mentioned.");
  } else {
   String[] results = args[0].split(",");
   for (int i = 0; i < results.length; i++) {
    logger.debug(results[i]);
    //call the delete function
    resultVal = deletefile(results[i]);
    if (resultVal == true) {
     result.append("Sucess,");
    } else {
     result.append("Error,");
    }
   }
   //Delete the last comma appended to the string
   result.deleteCharAt(result.length() - 1);
   logger.debug(result);

  }
 }

}