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CIS 3145 MidTerm Exam Review.pdf
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CIS 3145 MidTerm Exam R
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CIS 3145 MIdTerM exaMrevIew
What is the Java Programming Language? – answer It was released in 1995 as a part
of Sun Microsystems' Java platform. The language has developed much of its syntax
from C and C++. Java applications are usually compiled to bytecode (class file) that can
run on any Java Virtual Machine (JVM). Java is currently one of the most popular
programming languages being used.
How does the Java language compare to other languages? - answer Java was made so
its applications can be run on any computer platform without needing to be compiled for
each platform. Designed to automatically handle many operations involving the
allocation and de-allocation of memory.
How is a Java application compiled? - answer The java compiler compiles the source
code into a format known as Java Byte-codes, those byte-codes can be run on any
platform that has a Java Runtime Environment or JRE. Than using a JVM (Java Virtual
Machine) it translates the Bytecodes into native code that can be understood.
,What is the IDE? - answer Integrated Development Environment. Provides features that
can make developing Java applications considerably easier. These code developers
include Netbeans, Eclipse, and Android Studio.
How does Netbeans Work? -
**CHAPTER 2** -
How do you write code to create Class? - answer public class NumberGameApp;
What code creates main method? - answer public static void main(String[]args) {
}
What code creates a statement answer - package murach.test;
What code creates a java comment - // single line comment
<!-- Multiple Line Comment -->
What is an identifier in the Java language? answer - In Java programming language, an
identifier is a name given to a variable, class or method. Identifiers start with a letter,
underscore(_) or dollar sign ($).
What are the rules for naming a class? Recommendations? answer - Common coding
convention is to start the class name and every word within that name with a capital
letter. Letters and Digits only.
Examples: CodeTesterApp, NumberGuessingGame, and StudentClass
What are the rules and recommendations for naming variables? answer - All variables
have to be initialized with the fist letter of the first word lowercase and any word after
that with no space and capitalized. Also, avoid abbreviations
, Example: newCust, productPrice, maxQuantity
What is the syntax for declaring a primitive variable? answer - There are eight primitive
data types that are used for storing values in memory.
boolean
char
byte
float
void
short
double
int
long
Int and double are the two most common.
What is an assignment statement and how is it used with arithmetic expressions?
answer - An assignment statement assigns a value to a variable that is already
declared. This value can be a literal value, another variable, or an expression.
How is a string variable different from primitive variables? answer - Primitive types are
the basic types of data
byte, short, int, long, float, double, boolean, char
primitive variables store primitive values
reference types are any instantiable class as well as arrays
String, Scanner, Random, Die, int[], String[], etc.
reference variables store addresses
What objects are used to get input and send output to the console? answer - Getting
input
int number = Integer.parseInt( input );
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