log4j2 - Log4j version 2 set root logging level from Java? -

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in log4j version 2, how 1 accomplish previous versions of log4j did when called java code thus:

logger.getrootlogger().setlevel( level.trace );

i want, depending on utility's command-line option, turn on tracing.

try this

loggercontext ctx = (loggercontext) logmanager.getcontext(false); configuration config = ctx.getconfiguration(); loggerconfig loggerconfig = config.getloggerconfig(logmanager.root_logger_name);  loggerconfig.setlevel(level); ctx.updateloggers();

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