Interview Q&A / Java
Java interview questions
Collections, the JVM, strings, exceptions and threads, the backbone of most campus placement rounds.
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- What does the static keyword mean in Java?
static means a member belongs to the class itself, not to any one object. A static variable has one shared copy, a static method can be called without creating an object, a static block runs once when the class is loaded, and a static nested class does not need an outer object.
IntermediateIn-depth3 min read - What is the difference between heap and stack memory in Java?
The stack holds method call frames with local primitives and references, and each thread has its own. The heap holds all objects and is shared by every thread and cleaned by the garbage collector.
BeginnerQuick answer1 min read