Java log: various log methods : Log « Language Basics « Java
Java log: various log methods
/*
Logging In Java with the JDK 1.4 Logging API and Apache log4j
by Samudra Gupta
Apress Copyright 2003
ISBN:1590590996
*/
import java.util.logging.*;
import java.io.IOException;
public class LogMethods {
private static Logger logger = Logger.getLogger("sam.logging");
public LogMethods()
{
//first obtain the logmanager instance
LogManager manager = LogManager.getLogManager();
//remove all the associated handlers with this manager
manager.reset();
//create a new handler for the logger to write messages
// to the console
ConsoleHandler ch = new ConsoleHandler();
ch.setLevel(Level.FINEST);
//setting the logger level and handler
logger.setLevel(Level.FINEST);
logger.addHandler(ch);
}
/**
* This method demonstrates the basic logging methods
*/
public void printBasicMethods()
{
logger.log(Level.INFO, "THIS IS INFO LEVEL MESSAGE");
//creating a log record on our own
LogRecord record = new LogRecord(Level.SEVERE, "OUR OWN LOGRECORD OBJECT");
//logging the log record object
logger.log(record);
}
/**
* This method demonstrates the precise logging methods
*/
public void printPreciseMethods()
{
logger.logp(Level.INFO, "LogMethods", "printPreciseMethods","PRECISE METHODS..");
}
/**
* This method demonstrates the level based logging methods
*/
public void printLevelMethods()
{
logger.fine("THIS IS A FINE LEVEL MESSAGE");
logger.finer("THIS IS A FINER LEVEL MESSAGE");
logger.finest("THIS IS A FINEST LEVEL MESSAGE");
logger.config("THIS IS CONFIG LEVEL MESSAGE");
}
/**
*This method demonstrates the method level logging methods
*/
public void printMethod()
{
logger.entering("LogMethods", "printMethod");
logger.exiting("LogMethods", "printMethod");
}
public static void main(String[] args)
{
LogMethods lm = new LogMethods();
lm.printBasicMethods();
lm.printPreciseMethods();
lm.printLevelMethods();
lm.printMethod();
}
}
