Java Keywords List: Reserved and Contextual Keywords (Java 25)
The full list of Java keywords as of Java 25, with 51 reserved and 17 contextual keywords grouped by category, literals, version history and rules.
Python continue Statement: Skip Loop Iterations (Examples)
Learn how the Python continue statement skips a loop iteration, avoid the infinite while loop trap, and compare continue with break and pass in examples.
Java yield Keyword in Switch Expressions (with Examples)
Learn the Java yield keyword with switch expression examples, arrow and colon cases, yield vs return vs break, exhaustiveness and contextual keyword rules.
this vs super in Java: Keywords and Constructor Calls
Learn this and super in Java, this() vs super() constructor calls, Interface.super, Java 25 flexible constructor bodies and static context rules.
Java strictfp Keyword: Why It Is Obsolete Since Java 17
Learn what the strictfp keyword in Java did before Java 17, why JEP 306 made it obsolete, its syntax rules, and how to remove it from old code.
final vs finally vs finalize in Java
Learn the difference between final, finally and finalize in Java, with examples, when finally does not run, and what replaces deprecated finalize().
Java synchronized Keyword: Methods, Blocks and Locks
Learn the Java synchronized keyword with methods and blocks, which lock each form uses, reentrancy, visibility, deadlocks and virtual threads.
Java boolean Keyword: Values, Operators and Boolean Class
Learn the Java boolean type, default values, short-circuit operators, the Boolean wrapper, parseBoolean vs getBoolean, and boolean memory size.
Java assert Keyword: Assertions with Examples
Learn the Java assert keyword, enabling assertions with -ea, AssertionError, when to use assert vs exceptions, side effects, and assertions in tests.
Abstract Class in Java: abstract Keyword with Examples
Learn the abstract class in Java with examples, abstract methods, illegal modifier combinations, abstract class vs interface, and sealed hierarchies.
static Keyword in Java: Variables, Methods, Blocks and Classes
Learn the static keyword in Java for variables, methods, blocks, nested classes and imports, method hiding, thread safety and instance main in Java 25.
Java continue Statement with Examples and Pitfalls
Learn the Java continue statement in for, while and do-while loops, guard clauses, the while loop trap, switch, forEach lambdas and labeled continue.
Java break Statement: Loops, switch and Nested Loops
Learn the Java break statement in for, while and do-while loops and switch, how to exit nested loops, compile errors, finally and stream alternatives.
Java do-while Loop with Examples (vs while Loop)
Learn the Java do while loop with examples, the trailing semicolon, input validation, the continue trap, compareAndSet retries and do-while vs while.
Java while Loop: Syntax, Examples and Infinite Loops
Learn the Java while loop with examples for reading input, iterators and queues, infinite loops, while vs for vs do-while, and a payment retry example.
Java for-each Loop (Enhanced for Loop) with Examples
Learn the Java for-each loop over arrays, lists, sets and maps, why the loop variable is a copy, safe removal, custom Iterable classes and reverse order.
Java for Loop: Syntax, Examples and Common Mistakes
Learn the Java for loop with its execution order, counting down, steps, two variables, nested loops, batches and the mistakes that cause wrong results.
Java if-else Statement: else-if, Nested if and Examples
Learn the Java if-else statement with else-if chains, nested if, the dangling else, instanceof patterns, guard clauses and ternary alternatives.
Java transient Keyword with Serialization Examples
Learn the Java transient keyword with serialization examples, restoring fields in readObject(), static and final transient fields, Jackson, Gson and JPA.