[FAST TRACK] Android quiz 11

Which of this method is used to find out that a thread is still running or not?

• run()
• isAlive()
• Alive()
• checkRun()

What are different between Object Pool and Flyweight?

(multi answer)

• Flyweights are commonly immutable instances, while Object Pool usually are mutable.
• Flyweight always re-uses object with the same state but Object Pool maybe re-uses object with different state.
• Flyweight is a container for a set of domain objects while Object Pool usually is a domain object.
• Flyweight saves memory by not creating new objects and reusing existing ones when possible. Object Pool just re-uses provided objects without creating new ones.

An actor in a use case is always a person?

• True
• False

Which diagram describes the different types of objects and the static relationships between them?

• Class diagram
• Interactive diagram
• State diagram
• Activity diagram

What are the three algorithm constructs?

• Sequence, selection, repetition
• Input, output, process
• Input/output, decision, terminator
• Loop, input/output, process

In which state the activity is, if it is not in focus, but still visible on the screen?

• Stopped state
• Destroyed state
• Paused state
• Running state

Which permission level need user approve to use?

• Normal
• Dangerous
• Signature
• SignatureOrSystem

In Android, the first callback is called when activity is visible is

• onCreate
• onResume
• onStart
• onStop

Which of these class is used to create an object whose character sequence is mutable?

• String()
• StringBuffer()
• String() & StringBuffer()
• None of the mentioned

Which of these class is related to all the exceptions that can be caught by using catch?

• Error
• Exception
• RuntimeExecption
• All of the mentioned