Please help. Java questions.

QUESTION 1

An array's size declarator can be a negative integer expression.

True

False

QUESTION 2

When an array is passed to a method, the method has access to the original array.

True

False

QUESTION 3

A constructor can return a value of type double.

True

False

QUESTION 4

Two arrays are parallel if they hold the same type of data.

True

False

QUESTION 5

Only a fixed number of elements can be stored in an ArrayList?

True

False

QUESTION 6

Every component of an ArrayList object is a reference.

True

False

QUESTION 7

A class and its members can be described graphically using Unified Modeling Language (UML) notation.

True

False

QUESTION 8

When a return statement executes in a user-defined method, the method immediately exits.

True

False

QUESTION 9

The instance variable length is a public member of an array object and can be directly accessed using the dot operator (eg. scores.length ).

double[] scores = new double[7];

True

False

QUESTION 10

In Java, void methods return a value of type String.

True

False

QUESTION 11

A method can be defined within the body of another method. This is known as nesting methods.

True

False

QUESTION 12

The private variables of a class are accessible in any method of that class.

True

False

QUESTION 13

If a Java method does not use parameters, parentheses around the empty parameter list are still needed.

True

False

QUESTION 14

Parameters allow you to use different values each time the method is called.

True

False

QUESTION 15

In a Java class, the name of a constructor can be anything but the same as the name of the class.

True

False

QUESTION 16

A local variable is an variable that is declared within a method and that is visible only within that method.

True

False

QUESTION 17

Arrays can be initialized when they are created.

True

False

QUESTION 18

Arrays cannot be passed as parameters into methods, but their elements can be passed individually.

True

False

QUESTION 19

The Java operator new is needed to instantiate an object (i.e. create an instance of a Java class).

True

False

QUESTION 20

An exception is thrown when an array index goes out of bounds.

True

False

QUESTION 21

The class ArrayList is contained in the package java.util.

True

False

QUESTION 22

An array index can be any expression that evaluates to a non-negative integer. The value of the index must always be less than the size of the array.

True

False

QUESTION 23

In Java, [ ] is an operator, called the array subscripting operator.

True

False

QUESTION 24

To access an element of a two-dimensional array, you need a pair of indices: one for the row position, and one for the column position.

True

False

QUESTION 25

If an array index is less than zero, an InvalidIndexException exception is thrown.

True

False

QUESTION 26

You cannot override the default definition of the method toString because it is provided by Java Object class.

True

False

QUESTION 27

In a method call statement, when passing an array as an actual parameter, you use only its name.

True

False

QUESTION 28

To determine whether two reference variables of the Integer type point to the same Integer object, we can use either the method equals of the class Integer or the operator ==.

True

False

QUESTION 29

This is automatically provided for a java class if you do not write one yourself.

		accessor method
		default instance
		default constructor
		variable declaration