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Should Log Instances Be Static or Not?

Should Log Instances Be Static or Not?

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Private static final Log log = LogFactory.getLog(MyClass.class);

It is a good idea to store the log instance in a static final variable, because:

  • No problems with serializable classes
  • Initialization cost only once: getLog() may not be as cheap as you might think
  • Automatically thread-safe, only if the final keyword is included
  • Usable from static and non-static code
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