Filtering log lines using exception messages in log4j2
Recently I needed to filter out messages logged by a bit too verbose library. This is not too difficult in log4j2 since we can attach filters... »
Useful JDK tools (part 1)
JDK comes with a bunch of handy tools. It’s good to know about them. In this post we will take a look at jps, jstack, jmap... »
Matching regexes using backtracking
In this post we will write a simple regex library. The table below presents regex operators that we are going to support: Operator Description A single... »
Continuations in Java
CSP or Continuation-Passing Style is a style of programming in which functions return results via callbacks. For example + operator is a function that takes two... »
Spy JVM network traffic with Owasp ZAP proxy
We start by downloading Owasp ZAP proxy: $ # Download and unpack... $ curl -O -J -L https://github.com/zaproxy/zaproxy/releases/download/2.7.0/ZAP_2.7.0_Linux.tar.gz $ tar xvzf ZAP_2.7.0_Linux.tar.gz $ # Run ZAP... »