What is different between DataBinding and FindViewById method?

• DataBinding generate binding class at runtime and findViewById run at compile time.
• DataBinding generate binding class at compile time and findViewById run at runtime.
• DataBinding and findViewById run at compile time.
• DataBinding and findViewById run at runtime

What is the difference between const and val?

• The keywords const and val are used to declare an immutable property (read-only properties).
• const is also known as Compile-time constant. So, no runtime assignment of values is allowed in const variables. So, you can't assign a const variable to a function or to some class. And the val properties can be initialised at the runtime. So, you can assign a val variable to a function or to some class
• const only can be used for number like Integer, Long, float. Val can use for all type.

Can we create a clone of a singleton object?

• true
• false

With x = 0, which of the following are legal lines of Java code for changing the value of x to 1?

• 1, 2 & 3
• 1 & 4
• 1, 2, 3 & 4
• 3 & 2

What are the configuration changes?

• Language changes
• Sensor changes
• Screen rotations
• Keyboard changes

A series of actions for a particular Use Case without class behaviours can be modelled using......

• A Class Diagram
• A Package Diagram
• A Sequence Diagram
• An Activity Diagram

What is the difference between a factory and an abstract factory design pattern?

• Factory pattern is in Creational groups but Abstract factory pattern does not.
• Factory pattern creates an object through inheritance and produces only one Product. And abstract factory pattern creates the object through composition and produce families of products.
• Abstract factory pattern creates an object through inheritance and produces only one Product. And factory pattern creates the object through composition and produce families of products.
• There is no different between them.

Complete this sentence: ... often uses .... and defining algorithm's step for …

• Strategy pattern/ Template Method pattern/ Factory pattern

• Template Method pattern/ Strategy pattern/ Factory pattern

• Template Method pattern/ Factory pattern/ Strategy pattern

• Factory pattern/ Strategy pattern/ Template Method pattern

Fill input text: This sequence is .... diagram for demonstrate scenarios which user interacts.

• Usecase
• Sequence Diagram
• Class Diagram
• Model

"Without violating encapsulation, capture and externalize an object’s internal state so that the object can be restored to this state later."

Which design pattern is mentioned above?

• State
• Memento
• Prototype
• Composite