Question
1) Java is a compiled language and the compiler produces an executable A true B false 2)What operator is used to create object from class
1) Java is a compiled language and the compiler produces an executable
A true
B false
2)What operator is used to create object from class definitions(templates)?
A create
B new
C construct
D instantiate
3) By convention, all class names
A Use camel notation
B Are in all lowercase letters
C Start with an uppercase letter
D Are in all caps
4) Which method is used to "build" an object?
A set( )
B class( )
C constructor method
D mutate( )
5) The name of the your source code file must:
A Be exactly the same as the public class in the file
B Must be short
C Must start with a lowercase letter
D Must start with an uppercase letter
6)You can only create one instance of a class.
A true
B false
7)A reference variable will hold an
A Object
B Address
C Set of fields
D Variable
8) If your method is reading input from one input stream only, how many Scanner objects are needed?
A One object for each data item you are reading
B Two, one to read ints, and one to read doubles
C Only one
D As many as the number of data items your project needed
9) What parameter do you send to the constructor of the Scanner class to indicate you will use keyboard input?
A keyboard
B System
C system.in
D System.in
10) What Java operator allows you to access public methods?
A set operator
B get operator
C new operator
D dot operator
11)What is the purpose of the toString( ) method?
A To print an object
B To change the values of the fields
C To return an object
D To return a textual representation of the state of an object
12) A Java symbolic constant must be assigned a value when it is declared.
A true
B false
13) Both fields and local variables can be declared as final.
A true
B false
14)What built in class is used to mange sequences of characters?
A string
B Character
C String
D Buffer
15)What built in class is used to manipulate and change sequences of characters?
A String
B Character
C StringBuilder
D string
16)Where do you type javadoc comments?
A Inside each method
B At the top of the class definition file
C Above each method heading
D Anywhere in your source code file
17)Every object has a reference variable holding its address
A true
B false
18) Fields and variables are the same thing
A true
B false
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