Need help answering these questions

1: In programming, a(n) is a group of objects that can be operated on together.

a) collision

b) anthology

c) assemblage

d) collection

2: A difference between a collection and an array is that a collection .

a) can hold references

b)can be passed to a method

c)is dynamically resizable

d)can hold primitive data types

3: The Java Collections framework contains .

a)interfaces, but not classes

b)classes, but not interfaces

c)both interfaces and classes

d)neither interfaces nor classes

4:The List interface .

allows items to be inserted after creation

cannot contain duplicate elements

does not allow items to be removed

cannot contain more than 100 elements

5:An advantage of using the ArrayList class over the Arrays class is that an ArrayList .

can hold more elements

is dynamically resizable

supports use with indexes

requires less memory

6:An ArrayList can hold .

any primitive type

any numeric type

any object type

only 10 objects

7:The number of items an ArrayList can hold is its .

sufficiency

scope

range

capacity

8:If you have declared an ArrayList of Strings named myStrings, which of the following is not a legal method call?

myStrings.add("onion");

myStrings.remove("onion");

int s = myStrings.size();

myStrings.add(0, "leek");

9:Suppose you have declared an ArrayList of Integers named numbers with a capacity of 10, and that you have assigned values to the first six elements. Which of the following is not legal?

numbers.get(9);

numbers.set(1, 55);

numbers.get(5);

numbers.add(77);

10:When you create a class from which you will instantiate objects to store in an ArrayList, .

you must create a toString() method

you must create a compareTo() method

you must create both a toString() method and a compareTo() method

you are not required to create either a toString() method or a compareTo() method

11:The method that can be used to sort an ArrayList is .

Collections.sort()

ArrayList.sort()

List.sort()

Sorting.sort()

12:All of the following classes contain a built-in compareTo() method except .

Integer

String

Scanner

Double

13:If you want to use Collections.sort() with a class you have created, you must .

write your own compareTo() method

overload the < and > operators

write your own toString() method

write both a compareTo() method and toString() method

14:Which is not a requirement when you create a compareTo() method that overrides the Object class compareTo() method?

It must accept a parameter.

Its return type must be boolean.

It should return a value that is 1, 0, or 1.

It must be named compareTo().

15:Suppose you have created a Student class compareTo() method that is based on the value of a private idNum field. Assume the class contains a public getId() method that returns the idNum value. Also suppose that stu1s idNum is 345 and that stu2s idNum is 456. Which of the following returns 1?

stu1.compareTo(stu2)

stu2.compareTo(stu1)

stu2.compareTo(stu1.idNum)

stu1.getId().compareTo (stu2.getId())

16:Which of the following is true?

The ArrayList class works better than a LinkedList when you must move a lot of the data stored there.

The ArrayList class works better than a LinkedList when you have to sequentially retrieve a lot of data.

An ArrayList always works more efficiently than a LinkedList.

An ArrayList always is less efficient than using a LinkedList.

17:An object that can be used in a foreach loop to process the elements in a Collection is a(n) .

index

subscript

repeater

iterator

18:A generic class is one that uses a(n) .

overloaded method

generic method

type parameter

empty method

19:A generic method .

resides in a generic class

cannot be overloaded

can contain only one parameter

uses at least one type parameter

20:A generic method .

must have a type parameter that represents a reference type

must return a generic parameter

must have an empty body that is created at runtime

can have no more than one type parameter