HardJava
Java Quiz: advanced memory, threads and modern API
Test your advanced Java knowledge: heap and stack, garbage collector, immutable String, threads, synchronized, volatile, ExecutorService, Optional and records.
Music quizzes
Artists, albums, genres, instruments
Music takes in every register: the Baroque of Bach and Vivaldi, Beethoven's symphonies, the jazz of Louis Armstrong and Miles Davis, the rock of the Beatles and Queen, and also hip-hop, electronic music, French chanson and traditions from around the world. You will meet instruments such as the piano, violin, saxophone and electric guitar, basic theory like scales and octaves, and the albums that defined their era.
The quizzes test both your memory of hit songs and your general musical knowledge: composers, bands, labels, festivals. They cost nothing, there are five difficulty levels from very easy to expert, and a brief explanation comes after every answer. Whether you play an instrument or just love to listen, the Music quizzes have something to teach.
Quizzes
MediumJava
Java Quiz: OOP, inheritance, interfaces and collections
Test your object-oriented programming knowledge in Java: inheritance, interfaces, encapsulation, static, exceptions, collections, generics and equals.
EasyJava
Java Quiz: language basics, types and syntax
Test your Java basics: its creator, the JVM, the JDK and the JRE, the boolean and char types, String, arrays, the main method and class names.
Related themes
Frequently asked questions about Music
How many keys does a standard piano have?
A standard modern piano has 88 keys: 52 white and 36 black, which covers a little more than seven octaves, from the lowest note, A, to the highest, C. This range became the norm for modern pianos.
Who composed The Four Seasons?
The Four Seasons is a set of four violin concertos by the Venetian composer Antonio Vivaldi, published in 1725. Each concerto depicts a season and comes with a sonnet describing the scenes the music is meant to evoke.
Who were the four members of the Beatles?
The Beatles, formed in Liverpool in 1960, were John Lennon, Paul McCartney, George Harrison and Ringo Starr. The band split in 1970 after roughly ten years together, though its songs are still widely played.