Write logs into file java.util.logging.Logger

Question

Need code(config file) for writing logs into a file using util.logging.logger. It should also append the logs to the file from the other classes of the same project.

I know how to do it in log4j but I need it in util.logging.logger. Please help.

log4j file

# Set root logger level to DEBUG and its only appender to Appender1.
log4j.rootLogger=info,dailyRoll,console

# Appender1 is set to be a ConsoleAppender.
log4j.appender.console=org.apache.log4j.ConsoleAppender
log4j.appender.console.layout=org.apache.log4j.PatternLayout
log4j.appender.console.layout.ConversionPattern=%-10d %-4r [%t] %-5p %c %x - %m%n

# Appender2 uses PatternLayout.
log4j.appender.fileAppender=org.apache.log4j.RollingFileAppender    
log4j.appender.fileAppender.file=/home/Application.log
log4j.appender.fileAppender.layout=org.apache.log4j.PatternLayout
log4j.appender.fileAppender.layout.ConversionPattern=%-10d %-4r [%t] %-5p %c %x - %m%n

# Appender3 uses PatternLayout.
log4j.appender.dailyRoll=org.apache.log4j.DailyRollingFileAppender
log4j.appender.dailyRoll.file=/home/cms/MyFiles/EJBJob/CMS_log/Application.log
log4j.appender.dailyRoll.DatePattern=.yyyy-MM-dd
log4j.appender.dailyRoll.Append=true
log4j.appender.dailyRoll.layout=org.apache.log4j.PatternLayout
log4j.appender.dailyRoll.layout.ConversionPattern=%-10d %-4r [%t] %-5p %c %x - %m%n

I need the configuration file similar to the above one in logging (log4j.appender.dailyRoll.file=/home/cms/MyFiles/EJBJob/CMS_log/Application.log)

Let me google that for you ... tutorials.jenkov.com/java-logging/index.html — Constantin
– Constantin, Commented Jul 15, 2015 at 5:25
@Constantin Thanks. But i need a sample program which would append the logs to files. I use the following in log4j but i need the similar code in logging log4j.appender.fileAppender.file=/home/MyFiles/CMS_log/Application.log — Aradhya
– Aradhya, Commented Jul 15, 2015 at 5:38

Tim Biegeleisen · Accepted Answer · 2015-07-15 05:58:42Z

2

Try using this code:

import java.util.logging

// create an instance of Logger at the top of the file, as you would do with log4j
private static final Logger log = Logger.getLogger( ClassName.class.getName() );
FileHandler fh = new FileHandler("your_log.txt", true);   // true forces append mode
SimpleFormatter sf = new SimpleFormatter();
fh.setFormatter(sf);
log.addHandler(fh);

// java.util.logging has several logging levels from which to choose; here are two:
log.log( Level.FINE, "A FINE logging message goes here.");
log.log( Level.SEVERE, "A SEVERE logging message goes here.");

edited Jul 15, 2015 at 5:58

answered Jul 15, 2015 at 5:24

Tim Biegeleisen

526k32 gold badges324 silver badges399 bronze badges

Sign up to request clarification or add additional context in comments.

2 Comments

Aradhya Over a year ago

Thanks. I need a code which would append logs to file.

Aradhya Over a year ago

Correct Thanks, But I have many classes. In each and every classes i cannot declare the FileHandler fh = new FileHandler("your_log.txt", true); right so I need configuation file which will describe all the details.

Keerthivasan · Accepted Answer · 2015-07-15 05:44:52Z

0

I think you are looking for this property

java.util.logging.FileHandler.append

Sets whether or not the FileHandler's should append to an existing file or not (true or false), if an existing log file is found.

Please hava a look at this link

answered Jul 15, 2015 at 5:44

Keerthivasan

12.9k2 gold badges34 silver badges55 bronze badges

Collectives™ on Stack Overflow

Write logs into file java.util.logging.Logger

2 Answers 2

2 Comments

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

2 Answers 2

2 Comments

Comments

Your Answer

Sign up or log in

Post as a guest

Related