Java, Python, SQL, C++, and JavaScript programming skills are most in demand in the workplace, says the HackerRank developer skills report.

Dive into Java-specific coding challenges on HackerRank, covering a wide range of topics from data structures to algorithms. Sharpen your Java skills while tackling real-world problems.

Adding to the bevy of existing programming language popularity indices, developer careers company HackerRank is incorporating the job interview process into the mix.