JavaLogger

Simple and Intuitive library to manage logs (Console & File) in Java projects

Why this library ?

This isn't a new library, others already exists comming with more features and community. The only purpose of this JavaLogger is to offer a really easy to use logging system. With just 1 line of code you can set up a Logger to output on Console and/or File.

Features

• Logger creation with one line of code
• Multiple log levels to filter messages (INFO, WARN, ERROR, FATAL, SILENT)
• Enable/Disable a logger at any time (useful when working on dev mode)
• Display Timestamp and message level

How to use it ?

To create a simple logger that will output anything on Console :

Logger logger = new Logger();

Then use the functions to log messages :

logger.info("This is an information message !"); //Will output [INFO]  Mon Oct 22 17:24:00 CEST 2018 || This is an information message !
logger.warn("This is an warning message !");     //Will output [WARN]  Mon Oct 22 17:24:00 CEST 2018 || This is a warning message !
logger.error("This is an error message !");      //Will output [ERROR] Mon Oct 22 17:24:00 CEST 2018 || This is an error message !
logger.fatal("This is an fatal message !");      //Will output [FATAL] Mon Oct 22 17:24:00 CEST 2018 || This is a fatal message !

You can specify a minimum log level to output :

Logger logger = new Logger(Logger.ERROR); //info and warn messages won't be displayed

A good practice is to declare a public static Logger in one of your main classes so you can log messages everywhere !

What about Files ?

If you want to output on a log File just create the logger as following :

Logger logger = new Logger(Logger.WARN, "myLogFile.log");

Note that you can specify only log File path, the log level will be Logger.INFO by default

More control

You can use the full constructor to specify Console & File log level and the log File path You can use the log level Logger.SILENT to prevent Console or File outputs

Logger logger = new Logger(Logger.WARN, Logger.ERROR, "myLogFile.log");//WARN, ERROR and FATAL on Console, ERROR and FATAL on File

You can disable/enable a logger at any time (a Logger is enable after creation by default) :

logger.disable(); //Pretty self-explanatory
logger.enable();  //Same here ;)

What's next ?

This library aims to be really simple and intuitive with only few functions. But here are some features that will be added :

• Console output coloration depending on message level (using ANSI)
• Getters and Setters for log levels
• Enable/disable timestamp
• Display name of the class that generated the log message

Contribution

Feel free to send me a message if you see any bug, or if you have any suggestion !