Java Variables and Constants
Master Java variable declaration with var, final, and static final. Learn about scope, initialization, and when to use each modifier.
Posts tagged with #java-fundamentals
While and Do-While Loops in Java
Learn Java while and do-while loops: pre-test vs post-test iteration, infinite loops, loop termination strategies, and when to choose each loop type.
Wildcards in Java Generics
Use ?, ? extends T, and ? super T to master covariance and contravariance in Java method parameters.
Java Wrapper Classes
Master Java wrapper classes: Integer, Double, Boolean and more — immutable wrappers that add utility methods and null support to primitives.
JDK, JRE, and JVM
Clarify the distinction between JDK, JRE, and JVM — the three pillars of Java development and runtime environments.
Understanding the JVM
Explore how Java source code transforms into bytecode and executes on the Java Virtual Machine, including JIT compilation and memory management.