CSE 205 Final Review UPDATED
ACTUAL Exam Questions and CORRECT
Answers
A java application always contains a single method, this method is called? Give the signature of
this method. - CORRECT ANSWER - main.
public static void main(String[] args)
How is data given to [main] parameter? - CORRECT ANSWER - Through a command
line interface. For example: java someCompiledClass data
Identifiers can only begin with? - CORRECT ANSWER - Letters, underscores, dollar sign
What does API stand for? - CORRECT ANSWER - Application Programmer Interface
What needs to be done to use the scanner class? - CORRECT ANSWER - import
java.util.Scanner;
What's the difference between println, and print. - CORRECT ANSWER - println ends
with a line break
What is Encapsulation? - CORRECT ANSWER - The hiding of design decisions in a
computer program that are most likely to change, thus protecting other parts of the program from
change if the design decision is changed.
The variables contained in an object should be modified only within the object
What is the purpose of toString()? - CORRECT ANSWER - The purpose is to give a
readable representation of the object.
, What is an accessor method? - CORRECT ANSWER - AKA getter, an accessor method
can be defined to access private variable in the class since private data cannot be accessed from
outside of the class.
What is mutator method? - CORRECT ANSWER - A mutator method can be defined to
modify private variable in the class.
What is a constructor? - CORRECT ANSWER - A constructor is a special method that is
used to create a new object.
Define a constructor with two parameters int x, y for the class Point. - CORRECT
ANSWER - public Point(int x, int y){ this.x = x; this.y = y;}
What is the difference between an instance variable, and a local variable? - CORRECT
ANSWER - instance variables are global to all instance methods of the class, local
variables are only visible to the method scope in which its defined.
The this reference refers to the instance of the object. - CORRECT ANSWER -
What is the keyword that associates a variable or method with the class? - CORRECT
ANSWER - static
Do all classes need a main method? - CORRECT ANSWER - No, only one class should
have a main method which is the entry point to your program.
What is Software Engineering? - CORRECT ANSWER - An attempt to produce a
repeatable process for the development and management of software projects. The quality of the
software is a direct result of the process we follow to create it.
Explain the relationship between development and maintenance effort. - CORRECT
ANSWER - Small increases in development effort can reduce maintenance effort
ACTUAL Exam Questions and CORRECT
Answers
A java application always contains a single method, this method is called? Give the signature of
this method. - CORRECT ANSWER - main.
public static void main(String[] args)
How is data given to [main] parameter? - CORRECT ANSWER - Through a command
line interface. For example: java someCompiledClass data
Identifiers can only begin with? - CORRECT ANSWER - Letters, underscores, dollar sign
What does API stand for? - CORRECT ANSWER - Application Programmer Interface
What needs to be done to use the scanner class? - CORRECT ANSWER - import
java.util.Scanner;
What's the difference between println, and print. - CORRECT ANSWER - println ends
with a line break
What is Encapsulation? - CORRECT ANSWER - The hiding of design decisions in a
computer program that are most likely to change, thus protecting other parts of the program from
change if the design decision is changed.
The variables contained in an object should be modified only within the object
What is the purpose of toString()? - CORRECT ANSWER - The purpose is to give a
readable representation of the object.
, What is an accessor method? - CORRECT ANSWER - AKA getter, an accessor method
can be defined to access private variable in the class since private data cannot be accessed from
outside of the class.
What is mutator method? - CORRECT ANSWER - A mutator method can be defined to
modify private variable in the class.
What is a constructor? - CORRECT ANSWER - A constructor is a special method that is
used to create a new object.
Define a constructor with two parameters int x, y for the class Point. - CORRECT
ANSWER - public Point(int x, int y){ this.x = x; this.y = y;}
What is the difference between an instance variable, and a local variable? - CORRECT
ANSWER - instance variables are global to all instance methods of the class, local
variables are only visible to the method scope in which its defined.
The this reference refers to the instance of the object. - CORRECT ANSWER -
What is the keyword that associates a variable or method with the class? - CORRECT
ANSWER - static
Do all classes need a main method? - CORRECT ANSWER - No, only one class should
have a main method which is the entry point to your program.
What is Software Engineering? - CORRECT ANSWER - An attempt to produce a
repeatable process for the development and management of software projects. The quality of the
software is a direct result of the process we follow to create it.
Explain the relationship between development and maintenance effort. - CORRECT
ANSWER - Small increases in development effort can reduce maintenance effort
