data structures first quiz

Generics

let you specify what type of object a class can hold.

UML = unified modeling language

Blueprint for classes

Encapsulation

is wrapping data and methods together while hiding internal details.

What are javadoc comments

Special comments used to automatically generate documentation.

Overloading

Same method name

DIFFERENT parameters

Overriding

Same method signature

Different implementation INHERITANCE

TRY exception

Code that might fail, it runs

catch exception

handles the error (catches the error and runs appropriately)

finally exception

Even if a exception occurs , this block will execute after the try and catch blocks. It will always run

throw exception

YOU create an exception. This is a way to signal that an error has occurred in the code, allowing for custom error handling.

throws

Declares that a method might throw an exception.

unbounded wildcards

is ? = I dont know what type. It allows for flexibility in the type of objects that can be passed into a method or data structure, providing the ability to work with a range of object types.

EXAMPLE = ArrayList<?> list;

Upper Bounded Wildcards

A contract that specifies methods a class must implement, bounded up a limit = class animal to class dog. only accepts from this family tree, so car cant go into a animal class wilcard

Interfaces

are abstract types that allow for the definition of methods that must be implemented by any class that chooses to implement the interface. They enable polymorphism and provide a way to achieve multiple inheritance.

An interface describes WHAT to do, not HOW to do it.

Imagine you're hiring pilots.

You don't care:

• how they fly

• how they trained

• what plane they use

You only care that:

They can fly()
They can land()

So you make an interface: