Data Types :: Samples
// The "BasicElements" class.
public class BasicElements
{
public static void main (String[] args)// first method executed by Java
{
// variable declaration
// Names of variables should be descriptive.
// Unlike mathematics, variables represent their
// function within the program.
// It is a good idea to write understandable programs.
int cost; // one word variables are written in lowercase
double finalCost; // the second word is capitalized
String myName;
char letter;
boolean flag;
// Assignment of values
// When assignning values to a variable the equal sign is used.
// In this case the = sign is called an 'assignment denominator'
int purchase = 43; // 43 is assigned to purchase
double bill = 43.77;
String lastName = "cars"; //text within double quotes
char firstletter = 'a'; // single characters within single quotes
boolean exit = true;// either true or false
// In the following example the addition
// is assigned to the variable finalCost
finalCost = purchase + 100;
// To concatenate is to "join"
// strings and variables using the + operator
System.out.println (" The final cost of " + lastName + " is " + finalCost);
} // main method
} // BasicElements class