methods
14 tutorials tagged “methods”.
- Constructor vs MethodConstructors and methods compared point by point: name, return type, when they run, how they're called, inheritance, and the void-constructor trap.
- Method Overloading in JavaSeveral methods with one name and different parameters: how the compiler picks one, the widening-boxing-varargs order, and ambiguous calls.
- Passing Arrays to Methods and Returning ArraysPass an array to a method and get one back: why a method can change the caller's array, why it can't replace it, and how to return a new array safely.
- Call by Value and Call by Reference in JavaJava always passes by value: what that means for primitives and object references, why swap fails, and how a method can still change an object.
- Math ClassThe Math class toolbox: abs, max, pow, sqrt, round, floor, ceil, PI, floorDiv, floorMod and the exact methods, with the surprises in each.
- Methods in JavaBreak a program into named, reusable blocks: declaring and calling methods, parameters, return types and void, and why small methods help.
- Recursion in JavaA method that calls itself: base and recursive cases, how the call stack grows and unwinds, factorial and digit sum, and StackOverflowError.
- Varargs (Variable Arguments)Write methods that take any number of arguments with varargs (int... nums): how they become an array, the rules for using them, and where Java itself uses them.
- Method Parameters and ArgumentsHow values travel into a method: parameters vs arguments, matching by position and type, widening, parameters as locals, and final parameters.
- Method SignatureWhat a method signature is (name plus parameter types), what isn't part of it, how it tells overloaded methods apart, and clashing signatures.
