Week 97 — What is Base64 and how can data be encoded/decoded with it?

Week 96 — How can random numbers be generated in a Java application?

Week 95 — How can one find all ways a `String` matches a given regex?

Week 94 — How can one convert a datetime from one timezone to another?

Week 93 — What are unmodifiable collections and how can these be obtained?

Week 92 — What is a "defensive copy" and what is its purpose?

Week 91 — What are synchronized collections and how do they differ from regular collections?

Week 90 — What happens when running a Java program with `java -jar`?

Week 89 — What is the purpose of the `DatagramSocket` class and how can it be used?

Week 88 — What is Jakarta EE?

Week 87 — What is the purpose of the `jcmd` tool?

Week 86 — What is a heap dump and how can it be obtained from a Java application?

Week 85 — What is the Epsilon GC?

Week 84 — What is a JAR file?

Week 83 — What is `AutoCloseable` and why is it useful?

Week 82 — What is an `ExecutorService` and how can it be used?

Week 81 — What is the purpose of the `CyclicBarrier` class and how can it be used?

Week 80 — Which mechanisms does Java provide for comparing objects?

Week 79 — Which options are there for packaging Java applications as native executables?

Week 78 — What does a shutdown hook do and how can one be created?