Server-Side Java - Java - page 672

Network Logging with java.util.logging

Problem

You wish to write logging messages using the Java logging mechanism.

Solution

Get a Logger , and use it to log your messages and/or exceptions.

Discussion

The Java Logging API (package java.util.logging ) is similar to, and obviously inspired
by, the log4j package. You acquire a Logger object by calling the static Log-
ger.getLogger() with a descriptive String . You then use instance methods to write to the
log; these methods include:

public public void void log ( java . util . logging . LogRecord );

public public void void log ( java . util . logging . Level , String );

// and a variety of overloaded log( ) methods
public public void void logp ( java . util . logging . Level , String , String , String );

public public void void logrb ( java . util . logging . Level , String , String , String , String );

// Convenience routines for tracing program flow
public

public void void entering ( String , String );

public public void void entering ( String , String , Object );

public public void void entering ( String , String , Object []);

public public void void exiting ( String , String );

public public void void exiting ( String , String , Object );

public public void void throwing ( String , String , Throwable );

// Convenience routines for log( ) with a given level
public public void void severe ( String );

public public void void warning ( String );

public public void void info ( String );

public public void void config ( String );

public public void void fine ( String );

public public void void finer ( String );

public public void void finest ( String );