Choosing the right data structure is vital to get the job done with proper space vs performance trade-offs. Q1. What are the common data structures, … Read more ›...
Choosing the right data structure is vital to get the job done with proper space vs performance trade-offs. Q1. What are the common data structures, … Read more ›...
A stream is an infinite sequence of consumable elements (i.e a data structure) for the consumption of an operation or iteration. Any Collection<T> can be exposed as a stream. …...
Q. Have you seen job advertisements requiring Java candidates to work in real-time or high volume transaction processing systems? If you are applying for such jobs, … Read more ›...
Q1. When is an object needs to implement the Comparable interface? a) When adding it to a HashSet. … Read more ›...
Sorting objects in Java interview Q&As especially understanding Comparable & Comparator interfaces in Java for natural & custom sorting respectively. Q1. … Read more ›...
HashMap & HashSet are not only one of the frequently used data structures, but also one of the popular interview topics.
Q1. How does a HashMap store data?
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Q1. What are the differences between Iterator<T> Vs Iterable<T>?
A1. The “Iterable” was introduced to be able to use in the “foreach” loop.
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Q1 If Java did not have a Stack implementation, how would you go about implementing your own? A1 1) Determine the backing data structure (e.g. … Read more ›...
List, Set, Map, and Queue(access the ends FIFO or LIFO) are the basic Java data structure interfaces for which there are different implementations to cater for different usage patterns. …...
Q1. What is the purpose of a Map interface in Java collection API? A1. A map is a set of associations between pairs of objects. … Read more ›...