Tag: programming languages

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Multiple choice technology programming languages

import java.util.*; class GFC113 { public static void main (String[] args) { Object m = new LinkedHashSet(); System.out.print((m instanceof Collection)+","); System.out.print((m instanceof Set)+","); System.out.print(m instanceof HashSet); }} What is the result of attempting to compile and run the program?

  1. Prints: false,false,false

  2. Prints: false,true,false

  3. Prints: true,false,true

  4. Prints: true,true,true

  5. None of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Full explanation
Multiple choice technology programming languages

import java.util.*; class GFC118 { public static void main (String[] args) { Object i = new ArrayList().listIterator(); System.out.print((i instanceof List)+","); System.out.print((i instanceof Iterator)+","); System.out.print(i instanceof ListIterator); }} What is the result of attempting to compile and run the program?

  1. Prints: false,false,false

  2. Prints: false,true,false

  3. Prints: false,true,true

  4. Prints: true,true,false

  5. Prints: true,true,true
Reveal answer Fill a bubble to check yourself
C Correct answer
Full explanation