Home Java Example Java Util Writing Log Records Only After a Condition Occurs

Writing Log Records Only After a Condition Occurs
Posted on: April 16, 2007 at 12:00 AM

This section deals with log records those have been written in a log file if the "if" conditions are certified otherwise not.

Writing Log Records Only After a Condition Occurs

This section deals with log records those have been written in a log file if the "if" conditions are certified otherwise not. See the detail information given bellow:

Description of program:

Program takes a file name that has '.log' extension and checks it. If the given file exists then log records are written in a log file, when conditions are true and shows a message "Operation completely successfully!". But, if the given conditions are false then it doesn't write log records in a log file and shows a message "Invalid Level entry!". Again if the file doesn't exist then it shows a message like "File is not found".

Here is the code of program:


import java.io.*;

import java.util.logging.*;



public class WriteRecordsToCheckCondition{

  public static void main(String[] args) throws IOException{

  BufferedReader bf = new BufferedReader(new InputStreamReader(System.in));

  System.out.println("Enter file name which has '.log' extesion: ");

  String str = bf.readLine();

  File file = new File(str + ".log");

  if(file.exists()){

  FileHandler hand = new FileHandler(str + ".log", true);

  Logger log = Logger.getLogger("");

  System.out.println("Enter level of a logger: ");

  String str1 = bf.readLine();

  String level = str1.toUpperCase();

  if(level.equals("INFO")){

  LogRecord rec1 = new LogRecord(Level.INFO, "Welcome to RoseIndia.Net");

  hand.publish(rec1);

  System.out.println("Operation completly successfully!");

  }

  else if(level.equals("WARNING")){

  LogRecord rec2 = new LogRecord(Level.WARNING,"Do something here!");

  hand.publish(rec2);

  System.out.println("Operation completly successfully!");

  }

  else if(level.equals("SEVERE")){

  LogRecord rec3 = new LogRecord(Level.SEVERE, "Provide java program");

  hand.publish(rec3);

  System.out.println("Operation completly successfully!");

  }

  else{

  System.out.println("Invalid Level entry!");

  }

  log.addHandler(hand);

  

  }

  else{

  System.out.println("File is not found");

  }

  }

}

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