Functional Interface
Its new term in JavaSE 8 for interfaces having just one method e.g. Runnable, ActionListener, Comparator, all are the examples of functional interfaces. Previous name was Single Abstract Method Type (SAM).
Anonymous Inner Classes
Its on the spot implementation of interface without explicitly requiring a name. Usually implementation of interfaces is done by classes and each class does have name but anonymous inner class does not have any name
Lambda Expressions
Short hand or concise notation for implementing functional interfaces than anonymous inner classes.
Immutable and Mutable Objects
Immutable objects are those objects which can not be changed after its creation. String is most famous example of immutable object. There are many pros of immutable objects like they can not be corrupted by multiple threads in concurrent application, least overhead for GC
Guarded Blocks
Its a code block waiting for a certain condition to be true for its execution. It happens in multi threading programs when different threads do different task and they coordinate each other by setting certain conditions / variables.
Generic Type
Generic Type is a generic class or interface that is parametrized over types.
Generic Type Declaration
Definition of a class with type variables is know as Generic Type Declaration. This type variable can be used anywhere within a class.
The Diamond
In Java SE 7, we can replace the type arguments required to invoke a generic class, with empty set of type arguments (<>) as long as the compiler can determine or infer the type arguments from the content. This pair of angle brackets is known as "the diamond".
Its new term in JavaSE 8 for interfaces having just one method e.g. Runnable, ActionListener, Comparator, all are the examples of functional interfaces. Previous name was Single Abstract Method Type (SAM).
Anonymous Inner Classes
Its on the spot implementation of interface without explicitly requiring a name. Usually implementation of interfaces is done by classes and each class does have name but anonymous inner class does not have any name
Lambda Expressions
Short hand or concise notation for implementing functional interfaces than anonymous inner classes.
Immutable and Mutable Objects
Immutable objects are those objects which can not be changed after its creation. String is most famous example of immutable object. There are many pros of immutable objects like they can not be corrupted by multiple threads in concurrent application, least overhead for GC
Guarded Blocks
Its a code block waiting for a certain condition to be true for its execution. It happens in multi threading programs when different threads do different task and they coordinate each other by setting certain conditions / variables.
Generic Type
Generic Type is a generic class or interface that is parametrized over types.
Generic Type Declaration
Definition of a class with type variables is know as Generic Type Declaration. This type variable can be used anywhere within a class.
The Diamond
In Java SE 7, we can replace the type arguments required to invoke a generic class, with empty set of type arguments (<>) as long as the compiler can determine or infer the type arguments from the content. This pair of angle brackets is known as "the diamond".
BoxintegerBox = new Box<>();
Raw Type
A Generic Class or interface without type arguments is known as raw type. e.g. List is a generic type but simple List is a raw type. We can assign generic types to raw types but assignment of raw type to generic type will give warnings and will be checked at runtime.
Updating...
A Generic Class or interface without type arguments is known as raw type. e.g. List
