No it is not Christmas today, but here is another free, no ads, no trackers, no data collection, minimalistic app to track your run activity...

Finally a free, no ads, no trackers, no data collection, minimalistic app to track your car expenses! Built for Android 14+ using help from ...

Java type erasure logic means that at runtime some information is removed/replaced from generic declarations, which poses a minor challenge...

When using JPA and lazy collection loading, at the time the parent entity is retrieved from DB, the lazy children are NOT also loaded in mem...

Sample project showcasing how to use annotations to perform runtime logic to log changes in object values. Remember it is a SAMPLE , so obvi...

If you generate a class from an XSD schema , it will come with the necessary annotations to serialize it to an XML String. You can therefore...

Assuming you have a nice correct XSD file with proper namespace references and all, then you could convert it to a POJO (or more) using jaxb...

The minimum spanning tree (MST) is a subset of all edges in a weighted, undirected, connected graph such that the resulting graph is still c...

For an undirected graph, we can compute the disjointed sets that represent all connected nodes in the subgraph where each node resides. For ...

Also published on Medium .

When marking a method as synchronized , it's important to remember that synchronization does NOT change the transactionality settings of...

In Spring annotating a method as requiring a new transaction will not work if the caller of the method is in the same class . We can easily ...

When running applications in containers, we might have log files that are relevant to monitor but are not automatically printed with the con...

Sometimes a Java based app running in a container requires UTF8 encoding. Not all available images enable that by default, this can be fixed...

I've been recently introduced to a nice Docker feature: multi-stage builds . The idea is simple, if the build is containerized as well, ...

A scenario that popped up recently was to login a user via Java code to Kerberos and retrieve a GSSCredential object containing the Kerberos...

return null; Unless it's an analog clock, in which case: The hour hand makes a 360 degree turn every 12 hours or 12*60 = 720 minutes, th...

Something simple which comes up often when problems require some sort of item distribution. Given an amount of items N and K buckets, distri...

Given a number N, return the amount of trailing zeroes in its factorial. Example: 4! = 24, no trailing zeroes 10! = 3628800, two trailing ze...

Generate the K-th number made only of primes 3, 5, 7. Expected results up to K = 15: 1, 3, 5, 7, 9, 15, 21, 25, 27, 35, 45, 49, 63, 75, 81 T...