Log4j Implicit String Formatting

slf4j’s api provides “parameterized logging”, which allows you to do exactly that, although with a slightly different syntax. The example there is:

logger.debug("Value {} was inserted between {} and {}.", newVal, below, above);

For an implementation, you can use Logback which implements slf4j natively, or the slf4j bindings to connect with log4j or other loggers. The User Manual explains that, along with a short example.

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