OOP

Prepares the environment for developing java applications

Integrated Development Environment

Platform to write Java code and applications (Version 7 ngayon)

Desktop applications, client-server applications, mobile phone applications, games

Platform independent

Java Virtual Machine (JVM)

Sun Microsystems

Java Virtual Machine (JVM) and Java Development Kit (JDK)

Source code wiith .java extension

Another program called Javac that turns it into a Java byte code with .class extension (there should be no present errors)

Class file

Grayed out areas with forward slashes (// for single line comments; /* */ for multiline comments and asterisks that the compiler ignores

Starts with /** ends with */ to document the code (converted to HTML)

True

Semicolon (;)

Class segment notes the starting and ending of a java class segment code

Method

the code can be accessed outside the class without creating new objects

This part of the code does not return any value

Denotes starting point of the java program

NetBeans tries to display a list of available options after “.”

Cleans and builds your project with all necessary files for export if the program needs to be shared; will be put in a dist folder

can be text, numbers, pointers, objects or some specified memory location

Joining together direct text and a variable

True

True

False

False

+-2147483647 (use double to get a bigger/smaller number)

Order in which arithmetic’s operations are executed

Multiplication & Division > addition and subtraction

String variable

char variable

Tells java you want to use the scanner class in the util package of java library

Reference it in the code

Class that handles inputs

utility package of the java library where scanner is stored

Scanner user_input = new Scanner (System.in);

Creates the new objects

Specifies for system input

TThe variable that is called to call the input methods

Gets the next string of text or int of number that a user types

Cursor moves to a new line after the output

Cursor stays on the same line

if(Condition {//codes to be executed if true}

Greater than, < Less than, >= greater or equal to, <= less than or equal to

&& AND, || OR, == HAS A VALUE OF, ! NOT

if(condition){code to be executed} else {code to be executed}

IF statement inside another IF statement

One with two choices: True or false, yes or no, 1 or 0

Selection statement

switch(your test variable) { case Testing value: statement to be executed; break; default: statement to output if no matching case found; }

Repeat execution of statements a number of times

for(initial value; condition; increment/decrement { statements to be repeated if true }

Sets at what number should the repeat process start

Repeat should occur only when this condition is true

Move the counter forward or backward

Java Netbeans IDE Function

IDE Full form

Java Netbeans

What does java develop?

Java major advantage

Java’s own runtime environment

Current owner of java

What to download?

Java code to write & extension

What compiled the source code?

File that Java Virtual Machine runs

Java Comments

Javadoc comments

Java is case sensitive

Java code instructions end with a

public class MyFirstProgram { }

Public static void main(String[] args){ }

Public in “public static void main(String[] args){

Void in “public static void main(String[] args){

Main in “public static void main(String[] args){

IntelliSense

.Jar file (java archive) function

Data

How is data accessed

Concatenation

You cannot start with a number for a variable name

You cannot have the same variable name with a keyword

Variable names can have a space

Variable names are not case sensitive

Java minimum and maximum value for numbers

Operator Precedence

Priority in operators

Double quotes

Single quotes

Import java.util.Scanner; function

Scanner in Import java.util.Scanner;

Util in Import java.util.Scanner;

Scanner variable

New in Scanner user_input = new Scanner (System.in);

System.in in Scanner user_input = new Scanner (System.in);

User_input in Scanner user_input = new Scanner (System.in);