Generics and Collections

When using generics in Java, universal (generic) algorithms can be created for different types.

In Java, generics allow classes and interface types to be used as parameters to define classes, interfaces, or methods.

In Java, generics allow for stronger type checking and bug detection at compile time.

When using generics in Java, the diamond operator (<>) is used to declare the type parameter.

When using generics in Java, the super keyword is used to define a lower bound type on a wildcard.

In Java, the wildcard (?) is used to specify an unknown generic type parameter.

When using generics in Java, the extends keyword is used to define an upper bound type on type parameter or wildcard.

Wrapper classes are provided to allow primitive values to be used with generic code.