Java Comments and variables.

Another episode of java basics. In today's episode, we get to learn about java comments as well as java variables. What are java comments and variables? What are they used for and why are they needed?

Below is the block of code should you need to try and practice.
"All work and no play makes Jack a dull boy", so let's practice and have fun. Feel free to ask any questions you may have.

Copy and paste this code into your package, remember to make name changes where necessary.
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public class ComVar {

// Single line comment

/* comment begins
* first line
* second line
* third line
ends */

// Variables
// 3 types of variables
/*
* Variables are container used to store data values in a program
*
* Class Variable --- Create it inside a class not a method, and use the "static" keyword
* Instance Variable --- Created inside a class but not a in a method, uses an object to be called
* Local Variable --- created inside the method and not the class, not static, not need an object to be called.
*
*/

// Class variable
static int age; // without a value
static int shoeSize = 5; // with a value

// Instance Variable
String Name = "Veronica";

public static void main(String[] args) {
// TODO Auto-generated method stub
System.out.println("Shoe Size is: " + shoeSize);
age = 15;
System.out.println("Age: " + age);

ComVar person = new ComVar();
System.out.println("Name:" + person.Name);

// Local Variable
double Salary = 2500.00d;
System.out.println("Salary: R" + Salary);

}
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