Wipro Milestone-2 Mock Test

Collections are part of ______ package.

• java.collection
• java.lang
• java.io
• java.util

Collection framework consist of ______

• interfaces
• legacy classes
• general-purpose classes
• All

Which of the following is not a legacy class?

• Hashtable
• Vector
• ArrayList
• Dictionary

Which of the following is disadvantage of collection?

• Performance
• Casting
• Resizable
• None

Which set returns elements in sorted order?

• TreeSet
• HashSet
• LinkedHashSet
• All

Which Map is unordered and unsorted?

• TreeMap
• HashMap
• LinkedHashMap
• All

Collection can be navigated using_______

• iterator
• for-each loop
• both a & b
• None

Which of the following maintains insertion order?

• LinkedHashSet
• LinkedHashMap
• LinkedList
• All

Which of the following is true regarding Collection?

• class
• interface
• package
• All

What is the name of the method used to start a thread execution?

• init()
• start()
• run()
• resume()