Week 110 — What is the null literal and how can it be used in Java applications?

Week 109 — How can one parse JSON text in a Java application?

Week 108 — What is a `try`-with-resources statement and what is it useful for?

Week 107 — What is the difference between overloading and overriding (in Java)?

Week 106 — What is an annotation processor?

Week 105 — What are generics and how can they be used?

Week 104 — What options are there for logging information in Java applications?

Week 103 — How can one connect to a database using JDBC?

Week 102 — What is the `package-info.java` file and what can be done with it?

Week 101 — How can a directory be deleted from Java code including subdirectories and files?

Week 100 — What's the purpose of the `transient` keyword?

Week 99 — What is the `ReentrantReadWriteLock` class used for and how can it be used?

Week 98 — What is an enum?

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?