What is the difference between INFO and DEBUG logging levels ?

Javasearch.buggybread.com

Search Interview Questions

More than 3000 questions in repository.

There are more than 900 unanswered questions.
Click here and help us by providing the answer.

Have a video suggestion.
Click Correct / Improve and please let us know.

Submit Question

Interview Questions and Answers

Q1. What is the difference between INFO and DEBUG logging levels ?

Ans. Info Messages are something which we would like to see even if the application is in best of state. DEBUG messages are usually something that we would like to see while debugging some problem. DEBUG is lower level than Info. Any message logged with info gets printed if the Root level set is DEBUG.

Help us improve. Please let us know the company, where you were asked this question :

_{Like Discuss Correct / Improve Log4j Log4j levels}

Related Questions

What are some different logging levels for log4j ?

How will you design a Log4j kind of framework.

Difference between log4j and slf4j ?

What is the difference between log4j and java logging api.

What is the difference between TimeBasedRollingPolicy and SizeBasedTriggeringPolicy within Log4j ? Can we use both together and What would that mean ?

What is the difference between RollingFile and RollingRandomAccessFile in log4j ?

In following log4j configuration file, How should we change the logging level to WARN

<Configuration status="DEBUG">
<Appenders>
<RollingFile name="File" fileName="logs/xyz.log" filePattern="logs/xyz-%d{MM-dd-yyyy}.log.gz">
<TimeBasedTriggeringPolicy />
</RollingFile>
</Appenders>
<Loggers>
<Root level="DEBUG">
<AppenderRef ref="File" />
</Root>
</Loggers>
</Configuration>

in the following log4j config file, How should we change the file name and format

<Configuration status="DEBUG">
<Appenders>
<RollingFile name="File" fileName="logs/xyz.log" filePattern="logs/xyz-%d{MM-dd-yyyy}.log.gz">
<TimeBasedTriggeringPolicy />
</RollingFile>
</Appenders>
<Loggers>
<Root level="DEBUG">
<AppenderRef ref="File" />
</Root>
</Loggers>
</Configuration>

In the following log4j config, What if we don't need rolling logs

<Configuration status="DEBUG">
<Appenders>
<RollingFile name="File" fileName="logs/xyz.log" filePattern="logs/xyz-%d{MM-dd-yyyy}.log.gz">
<TimeBasedTriggeringPolicy />
</RollingFile>
</Appenders>
<Loggers>
<Root level="DEBUG">
<AppenderRef ref="File" />
</Root>
</Loggers>
</Configuration>

What are some of the Log4j appenders ?