It is very essential to learn and master java collections concepts. It is a very important part of the core java tutorial. HashMap in java with examples LinkedHashMap in java with example TreeMap in java with examples TreeSet in java ArrayList in java LinkedHashSet in java ConcurrentHashMap...
If you are a fresher and junior Java developer with 2 to 3 years of experience then you must revise these questions, learn if you don't know to do well on your Java Job interviews. 1. What is method overloading in OOP or Java? (answer) It's one of the oldest OOPS concept ...
Posted on 13.11.2012 by mstepanenko A very common interview question: what is the difference between ArrayList and LinkedList in java ? In what situation you would prefer to use one instead of another ? Theory. ArrayList implemented as a dynamic array. So, we could easily add new items to...
these builtin lists are fast in every language, I remember 100k random insert/delete on length 100k arraylist in java took only 400 ms, and that was back in 2016 Also there was one problem which we were told needed some memset to be fast (it was actually n^2 solution lol) and so I...
Only post general Java theory & questions here. View this forum's RSS feed Threads: 4,232 Posts: 20,480 Audio Source Separation by suppp March 25th, 2025,04:27 AM Object Oriented Programming (44 Viewing) Classes, Objects, Methods, Inheritance.. ...
We are hopeful that many of the answers to your queries on the basic coding interview questions have been clarified. Most of the coding implementations that we have discussed are in Java; however, even if you are unaware of the language, the steps or the details of the algorithm given here...
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java java-programming-language javabasic Updated Dec 1, 2024 Java jaigora24 / Java Star 16 Code Issues Pull requests Questions for practice in Java programming language java java-practice practice algorithms data-structures java-programming-language java-programs algorithms-and-data-structures ja...
new ArrayList<String>(); for(String name : friends) { uppercaseNames.add(name.toUpperCase()); } In this imperative style, this code created an empty list and then populated it with uppercase names, one element at a time, while iterating through the original list. As a first ...
This comprehensive course is perfect for anyone who wants to learn Java programming from scratch. Even if you have no previous programming experience or knowledge of Java, this hands-on course will guide you through more than 250 steps to help you gain a solid foundation in the language. Throu...