Java tutorial
/* * To change this license header, choose License Headers in Project Properties. * To change this template file, choose Tools | Templates * and open the template in the editor. */ package Cursling; import java.io.BufferedReader; import java.io.File; import java.io.FileNotFoundException; import java.io.FileReader; import java.io.FileWriter; import java.io.IOException; import java.io.PrintWriter; import org.apache.commons.io.FileUtils; import org.apache.log4j.Logger; /** * * @author Ajit (P7109156) <Ness> */ public class deleteMonitor { static final Logger logger = Logger.getLogger(deleteMonitor.class); public static String input_file_del; public static String output_file_del; public File storeUpdate; public File storeUpdate1; boolean isdeleted; boolean isdeleted1; public static void main(String[] args) { } public String _deleteMonitor(String monitor_name) { isdeleted = false; try { File inFile = new File(input_file_del); if (!inFile.isFile()) { logger.info("Failed to Delete. Data file not found."); return ("failed"); } storeUpdate = new File(input_file_del); File tempFile = new File(inFile.getAbsolutePath() + ".tmp"); BufferedReader br = new BufferedReader(new FileReader(input_file_del)); PrintWriter pw = new PrintWriter(new FileWriter(tempFile)); String line = null; while ((line = br.readLine()) != null) { if (!line.equalsIgnoreCase("")) { String tmp_linee = line.replaceAll("\\\\", ""); if (tmp_linee.startsWith(monitor_name + " = ht") || tmp_linee.startsWith(monitor_name + "=ht")) { isdeleted = true; pw.flush(); } else if (tmp_linee.startsWith(monitor_name.toLowerCase() + " = ena") || tmp_linee.startsWith(monitor_name.toLowerCase() + " = dis") || tmp_linee.startsWith(monitor_name.toLowerCase() + "=ena") || tmp_linee.startsWith(monitor_name.toLowerCase() + "=dis")) { isdeleted = true; pw.flush(); } else { pw.println(line); pw.flush(); } } else { } } pw.close(); br.close(); //Rename the new file to the filename the original file had. if (tempFile.canRead()) { Long before = storeUpdate.lastModified(); FileUtils.copyFile(tempFile, storeUpdate); Long after = storeUpdate.lastModified(); if (before.equals(after)) { logger.info("failed to delete Monitor " + monitor_name); return ("failed"); } else if (isdeleted == true && deleteOutput(monitor_name) == true) { logger.info("Monitor " + monitor_name + " Deleted."); return ("deleted"); } else if (isdeleted == true && deleteOutput(monitor_name) == false) { logger.info("Monitor " + monitor_name + " Deleted. But output will removed in Sometime."); return ("deleted"); } else { logger.info("Failed to delete Monitor " + monitor_name + " . Monitor not found."); return ("not_found"); } } else { logger.info("failed to delete Monitor " + monitor_name); return ("failed"); } } catch (FileNotFoundException ex) { logger.info("failed to delete Monitor " + monitor_name); logger.error("Error1 : " + ex); return ("failed"); } catch (IOException ex) { logger.info("failed to delete Monitor " + monitor_name); logger.error("Error2 : " + ex); return ("failed"); } } public boolean deleteOutput(String monitor_name) { isdeleted1 = false; try { File inFile = new File(output_file_del); if (!inFile.isFile()) { logger.info("Parameter is not an existing file"); return false; } storeUpdate1 = new File(output_file_del); File tempFile = new File(inFile.getAbsolutePath() + ".tmp"); BufferedReader br = new BufferedReader(new FileReader(output_file_del)); PrintWriter pw = new PrintWriter(new FileWriter(tempFile)); String line = null; while ((line = br.readLine()) != null) { if (!line.equalsIgnoreCase("")) { if (line.startsWith("[\"" + monitor_name + "\"")) { line = line.replaceAll(monitor_name, "hide"); pw.println(line); pw.flush(); isdeleted1 = true; } else { pw.println(line); pw.flush(); } } else { } } pw.close(); br.close(); //Rename the new file to the filename the original file had. if (tempFile.canRead()) { Long before = storeUpdate1.lastModified(); FileUtils.copyFile(tempFile, storeUpdate1); Long after = storeUpdate1.lastModified(); if (before.equals(after)) { return false; } else if (isdeleted1) { return true; } else { return false; } } else { return false; } } catch (FileNotFoundException ex) { logger.error("Error1 : " + ex); return false; } catch (IOException ex) { logger.error("Error2 : " + ex); return false; } } }