Kotlin

One of the operating systems that can not be used for Andriod application development is?

• Windows

• Mac

• Linux

• Contiki

In Andriod Studio, the virtual console type tab that is used as a command-line interface is called?

• Memory

• CPU

• Logcat

• ADB logs

On implementing the method of onStartCommand(), the service must be stopped after the task is completed using?

• stopSelf()

• stopService()

• stopSelf() or stopService()

• endService()

The space between the edge of a widget content can be customized using?

• Margins

• Height

• Padding

• Weight

In Andriod Studio the tab in which error is shown is called?

• Logcat

• ADB logs

• CPU

• Memory

What does this code do?

foo()()

• Calls a function which is returned by the call foo

• Calls "foo" asynchronously

• Fails compilation

• Creates a two-dimensional array

What is "to" in the example below?

• A kotlin keyword to create a Pair(33,42)

• An infix extension function creating a Pair(33,42)

• A syntax error

• A kotlin keyword to create a range from 33 to 42

Which is true for the following simple class declaration?

• It has a private property "name"

• It is package-private

• It can be extended by other classes

• It is public

What does the following code print?

• [1,2,3,4]

• Nothing, there is a compile error

• True

• Unit

What is the difference between A and B?

• "a" is volatile as in Java

• "b" is final and cannot be changed

• "b" can never become null

• "a" is final and cannot be changed