constructors
8 tutorials tagged “constructors”.
- Constructor Overloading and Constructor ChainingGive a class several constructors, then chain them with this(...) so all setup and validation lives in one place. Also super(...), and the recursive-call error.
- 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.
- Copy ConstructorCopy an existing object with a copy constructor: shallow vs deep copies, copying arrays and mutable fields safely, and why it beats clone().
- Flexible Constructor BodiesJava 25 lets constructors run code before super(...) or this(...): validating arguments first, preparing values, and what is still forbidden.
- Constructor Calls in InheritanceHow constructors run in a hierarchy: the chain up to Object, the order bodies run in, the automatic super() call, and the no-arg error.
- Order of InitializationThe exact order Java runs static blocks, instance blocks, field initializers and constructors, for parent and child classes, step by step.
- Constructors in JavaConstructors set up a new object: the default constructor, no-arg and parameterized constructors, validation, and when the default disappears.
- Private ConstructorsWhy you'd block new from outside: utility classes like Math, controlled creation with factory methods, and the singleton pattern.
