CSE 205 Final UPDATED ACTUAL Exam Questions and CORRECT Answers

CSE 205 Final UPDATED ACTUAL Exam
Questions and CORRECT Answers
Having multiple class methods of the same name where each method has a different number of
or type of parameters is known as


a) method overloading
b) Encapsulation
c) importing
d) information hiding

e) encapsulation - CORRECT ANSWER - a) method overloading


The relationship between a class and an object is best described as


a) objects are instances of classes
b) classes are instances of objects
c) classes are programs while objects are variables
d) objects and classes are the same thing

e) objects are the instance data of classes - CORRECT ANSWER - a) objects are
instances of classes


To define a class that will represent a car, which of the following definitions is most appropriate?


a) public class CAR
b) public class car
c) private class car
d) private class Car

e) public class Car - CORRECT ANSWER - e) public class Car

,Which of the following reserved words in Java is used to create an instance of a class?


a) new
b) public
c) public or private, either could be used
d) class

e) import - CORRECT ANSWER - a) new


What does acronym API stands for?
a) Application Parameter Internet
b) Application Programming Interface
c) Apply Programming Interactive

d) Abstraction Programming Interface - CORRECT ANSWER - b) Application
Programming Interface


A class' constructor usually defines


a) how an object is initialized
b) how an object is interfaced
c) if the instance data are accessible outside of the object directly
d) the number of methods in the class

e) the number of instance data in the class - CORRECT ANSWER - a) how an object is
initialized


Java methods can return only primitive types (int, double, float, char, boolean, etc).


True

False - CORRECT ANSWER - False

,All Java classes must contain a main method which is the first method executed when the Java
class is called upon.


True

False - CORRECT ANSWER - False


use the following class definition
import java.text.DecimalFormat;
public class Student
{ private String name;
private String major;
private double gpa;
private int hours;
public Student(String newName, String newMajor, double newGPA, int newHours)
{ name = newName;
major = newMajor;
gpa = newGPA;
hours = newHours;
}
public String toString( )
{ DecimalFormat df = new DecimalFormat("0.000");
return name + "\n" + major + "\n" + df.format(gpa) + "\n" + hours
}
}
Which of the following could be used to instantiate a new Student s1?


a) new Student(s1);

, b) new Student s1 = ("Jane Doe", "Computer Science", 3.333, 33);
c) Student s1 = new Student("Jane Doe", "Computer Science", 3.333, 33);
d) Student s1 = new Student( );

e) s1 = new Student( ); - CORRECT ANSWER - c) Student s1 = new Student("Jane Doe",
"Computer Science", 3.333, 33);


Consider a method defined with the header: public void foo(int a, int b). Which of the following
method calls is legal?
a) foo(, 2 * 3);
b) foo(0, 0.1);
c) foo(0);
d) foo(1 + 2, 3 * 0.1);

e) foo( ); - CORRECT ANSWER - a) foo(, 2 * 3);


Use the following partial class definitions:
public class A1
{
public int x;
private int y;
protected int z;
...
}
public class A2 extends A1
{
protected int a;
private int b;
...
}
public class A3 extends A2