Tech

I want to show you how to read all the lines of a file with the Java Non-blocking I/O API (package java.nio) and provide some historical context how this compares to earlier versions of the java.io API.

Let’s have a look at the Java Security MessageDigest class that provides one-way hash functions and how to get individual MessageDigest instances without using Strings for the algorithm names everywhere in our code.

Let’s have a look at two common issues with if statements: Indentation hell aka too deeply nested if statements and fail fast if statements at the beginning of a certain code block instead of wrapping the whole code block with an if statement.

Let’s have a look at a solution to use character set strings like “UTF-8” in your code without placing these strings everywhere.