C and C++ reward a reader who types the example. This hub gathers the posts that explain the object model — what a static member is, why a String behaves differently from a StringBuilder — and the data-structure questions that follow, then points each one at a compiler you can run in the browser.
The OOP explainers use Java examples, because that is the language our beginner guides teach the concepts in. The rules transfer: a static member, an object reference and a mutable buffer behave the same way in C++ once you know what to look for.
The object model questions that come up in interviews, with runnable examples.
A static member belongs to the class and is shared. A non-static member belongs to each object. See the difference in code, with the famous compiler error explained.
String is immutable, StringBuilder is fast and mutable, StringBuffer is mutable and thread safe. Compare all three with compiled Java examples and a simple rule.
Fresher Java roles keep asking for Spring Boot, SQL, Docker and microservices. But you do not need all of them this month. Learn Java developer skills in four layers, starting with Core Java and SQL, and finish with one project you can explain line by line.
As of October 2026, the top-ranked Java MOOC is officially legacy. Here's the truly free course to start with, plus which "free" offers hide a certificate fee, and a five-step path to your first Java project.
C and C++ interviews ask the same patterns as every other language. Practise the pattern, not the syntax.
The 50 DSA questions most likely to appear in 2026 IT-services and product-company coding rounds, with solutions and complexity. Start with arrays, strings, stacks and linked lists — services loops lean on them.
A fresher map for coding interview preparation in India: the rounds at TCS, Infosys, and product companies, the ~10 DSA patterns that matter, and a realistic weeks-not-months prep plan.
Do you need DSA to get a developer job in India? The honest answer is “it depends” — and here is exactly when DSA matters, when projects win, and how much is enough.
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