Programming

Front 1

In Java, a Variable is defined as:

Back 1

Named memory location that can be assigned a value

Front 2

Which of the following are relational operators in Java?
<, <=, !=, (NOT =)

Back 2

<, <=, !=, (NOT =)

Front 3

Which of the following are relational operators in Java?
<, <=, !=, (NOT =)

Back 3

<, <=, !=, (NOT =)

Front 4

A java program begins at?

Back 4

main()

Front 5

A statement ends with a ___?

Back 5

;

Front 6

Three fundamental pricnaples of OOP are

Back 6

Encapsulation
PolyMorphism
Inheretence

Front 7

What are the two floating point types?

Back 7

Float and Double

Front 8

Can the modulus operator % be used one floating point values?

Back 8

Yes, the modulus operatorcan be used on floating point values

Front 9

What is the width of char?

Back 9

16

Front 10

Which of the following would be the most acceptable identifier for a class?
A)My.Class
B)myclass
C)MyClass
D)my_class()

Back 10

C) MyClass

Front 11

Logical operators must have boolean operands
True-or-False?

Back 11

False

Front 12

Extra space and redundant perentheses should be avoided in an expression because they slow down the execuation of your program
True-or-False?

Back 12

False

Front 13

What are the exape sequence for a tab and a backspace

Back 13

\t and \b

Front 14

Variables are created when their scope is entered and destroyed when thier scope is exited
True-or-False?

Back 14

True

Front 15

What operator is used to access the members of a class through an object?

Back 15

The dot operator

Front 16

What does new do?

Back 16

The new operator allocates memory for an object

Front 17

Which of the following statements regarding the following statement are true? VEHICLE MINIVAN = NEW VEHICLE();
A)Dynamically allocates memory for an object
B)The new operator allocates memory for a class
C)The new operator passes variable values on an object
D)The new operator only passes int variables to an object

Back 17

A)Dynamically allocates memory for an object

Front 18

What return type is used if a method does not return a value?

Back 18

Void

Front 19

How does Java reclaim the memory from unused objects?

Back 19

The garbage collector reclaims the memory from unused objects

Front 20

A variable for a class object is called an ______ variable

Back 20

Instance

Front 21

Each object has its own copies of the instance variables defined by its class

Back 21

True

Front 22

What is a class?

Back 22

A class is a tmeplate that defines the form of an object

Front 23

What method will allow your program to accept input from the keyboard?

Back 23

System.in.read()

Front 24

Can break and continue operate with a label

Back 24

Yes, both break and continue can operate without a label

Front 25

The SWITCH expression must be of what type?

Back 25

Char,byte,short and int

Front 26

The expression controlling the switch can be of any data type True-or-False

Back 26

False

Front 27

To check the condition at the end of the loop us a ______ loop.

Back 27

Do While

Front 28

No two case constants in the same switch can have identical values

Back 28

True

Front 29

Explain the operation of continue?

Back 29

The continue statement casues the next ieration of a loop to take place bypassing any intervening code

Front 30

Explain the operation of continue?

Back 30

The continue statement casues the next ieration of a loop to take place bypassing any intervening code

Front 31

Can an else clause exist by itself, with a matching if?

Back 31

No, an else clause must always be preceded by and if

Front 32

How do you create an infinite for loop?

Back 32

for ( ; ; )

Front 33

What does break do in a switch statement?

Back 33

Break stops the execution of a statement sequence. This, break can be used to prevent one case from falling into the next.

Front 34

What are acceptable variable names?

Back 34

$myVar, _myBar, my$var, my_var, my2var
not; cannot begin with a number or '#', cannot have a '#' in it.

Front 35

A comment that starts with /*

Back 35

can extend over multiple lines
and
must end with */

Front 36

javac Sample.java
java Sample
this sequence of commands would compile and run a main() method in a class called Sample

Back 36

Jesus help me

Front 37

What are simple, non object oriented types in Java?

Back 37

short, long, double
NOT HALF, CHARACTER, and STRING

Front 38

Instance variables are:

Back 38

1)Defined within a class
2)Can have different values for each object in a class

Front 39

A constructor method:

Back 39

1)Has the same name as its class
2)Initializes an object when the object is created
3)Cant be declared void

Front 40

A finalize method:

Back 40

is called just before an object is destroyed by the garbage collector

Front 41

A java string is:

Back 41

1)an object
2)unchangable

Front 42

Class variables:

Back 42

1)are defined within a class
2)are defined using the keyword static
3)are defined using the keyword dynamic

Front 43

A java string is:

Back 43

1)an object
2)unchangable

Front 44

Class variables:

Back 44

1)Are defined within a class
2)Are defined using a keyword static
3)Are defined using the keyword dynamic

Front 45

-An abstract method method must be conained in an abstract class
-An abstract class can contain a mix of abstract and concrete methods
-and abstract class cannot be declared as final

Back 45

answer above

Front 46

To prevent a class from being inherited, declare the class ____?

Back 46

Final

Front 47

how much can a byte hold?

Back 47

127

Front 48

How many times can you call a constructor?

Back 48

One for each instantiation of its object type

Front 49

Wehm a class extends from an abstract class, it is optional to override its super abstract methods

Back 49

False

Front 50

What kind of class holds an abstract class method?

Back 50

An interface

Front 51

The output from javac command is ___?

Back 51

Bytecode

Front 52

The result of adding a short to a byte will be a(n) _____ ?

Back 52

Int

Front 53

Which of the following is not a Java loop command?
While, For, Do, Loop

Back 53

Loop

Front 54

String values can be changed, true or false?

Back 54

False