CSE 110 Final || 100% Valid Solutions.
What are the indexes for the first and last positions of an array called x? correct answers x[0] and
x[x.length-1]
Immediately after instantiating a new array of primitives, what fills the array? What about an
array of objects? correct answers Primitive: default value fills the array (0 for int, 0.0 for double,
false for boolean)
Objects: null fills array
What happens when you try to access an array element past the end of an array? correct answers
An exception of type ArrayIndexOutOfBoundsException is thrown
Instantiate three arrays called x,y,and z of types int, String, and BankAccount, respectively, all of
size 10. correct answers int[] x = new int[10];
String[] y = new String[10];
BankAccount[] z = new BankAccount[10];
What is method overloading? correct answers two methods in the same class that have the same
name but different signatures (ex: int calc(double n1, int n2) and int calc(int 1, int n2))
Use the following full array x:{4,8,5,1,6,3,2}
a. What is the value given by x[1]?
b. What is the value given by x[6]?
c. What is the value given by x[7]?
d. What is the value given by x.length? correct answers a. 8
b. 2
c. ArrayIndexOutOfBounds
, d. 7
Write a for-loop to double each element in the array x given in the aray x:{4,8,5,1,6,3,2} correct
answers for(int i = 0; i<x.length; i++) {
x[i] *= 2;
}
What is a static variable?
What is a static method? correct answers Static variable and static method both belongs to the
class. They are not bound to instances.
What is the meaning of public? correct answers Refers to a visibility modifier in which anyone
can see this item
What is a do while loop? correct answers Code is repeated until the condition becomes false.
What does a class contain in object oriented programming? correct answers Constructors,
methods, and variables
What is encapsulation? correct answers Data and behavior is hidden
What are the Java primitive data types? correct answers byte, short, int, long, float, double,
boolean, char
What is the output of the following code snippet?
System.out.print("Hello");
System.out.println("Good Day!"); correct answers HelloGood Day!
What are the indexes for the first and last positions of an array called x? correct answers x[0] and
x[x.length-1]
Immediately after instantiating a new array of primitives, what fills the array? What about an
array of objects? correct answers Primitive: default value fills the array (0 for int, 0.0 for double,
false for boolean)
Objects: null fills array
What happens when you try to access an array element past the end of an array? correct answers
An exception of type ArrayIndexOutOfBoundsException is thrown
Instantiate three arrays called x,y,and z of types int, String, and BankAccount, respectively, all of
size 10. correct answers int[] x = new int[10];
String[] y = new String[10];
BankAccount[] z = new BankAccount[10];
What is method overloading? correct answers two methods in the same class that have the same
name but different signatures (ex: int calc(double n1, int n2) and int calc(int 1, int n2))
Use the following full array x:{4,8,5,1,6,3,2}
a. What is the value given by x[1]?
b. What is the value given by x[6]?
c. What is the value given by x[7]?
d. What is the value given by x.length? correct answers a. 8
b. 2
c. ArrayIndexOutOfBounds
, d. 7
Write a for-loop to double each element in the array x given in the aray x:{4,8,5,1,6,3,2} correct
answers for(int i = 0; i<x.length; i++) {
x[i] *= 2;
}
What is a static variable?
What is a static method? correct answers Static variable and static method both belongs to the
class. They are not bound to instances.
What is the meaning of public? correct answers Refers to a visibility modifier in which anyone
can see this item
What is a do while loop? correct answers Code is repeated until the condition becomes false.
What does a class contain in object oriented programming? correct answers Constructors,
methods, and variables
What is encapsulation? correct answers Data and behavior is hidden
What are the Java primitive data types? correct answers byte, short, int, long, float, double,
boolean, char
What is the output of the following code snippet?
System.out.print("Hello");
System.out.println("Good Day!"); correct answers HelloGood Day!
