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Friday, October 1, 2010

Java - my first coding tutorial

// Author-dijidog-2010- (tutorial) a celsius to fahrenheit converter // calculation desired - degreesFahrenheit= 9 / 5 * degreesCelsius + 32 or ()- 32)*5/9; import java.util.Scanner;/*import declaration-imports the object that is named scanner-it is an object already present in java scripting language-a pre made scanner that searches and returns one item (token) at a time*/ public class CelsiusToFahrenheit//makes the class visible to all classes using the modifier "public". {public static void main(String[] args) {// more study needed on this line-these {} separate blocks of code System.out.println("Celsius to Fahrenheit Converter"); System.out.println("Enter a temperature in CELSIUS: ");//prints lines on screen (this prints out every time program is run) Scanner Celsius = new Scanner(System.in);/**allows input by the user and creates a variable (token),in this case named Celsius **and is searched and found by the object "scanner" when the variable Celsius is "called" **/ double Faren = 0.0;//part of the calculation-makes the variable Faren equal 0.0 before converting to double value //makes the final output a double digit integer - Faren is equal to Celsius if it has nextdouble if(Faren <10)>110 input create a print line output...wrong placement/altered text to fit the situation. if(Celsius.hasNextDouble())// if Celsius has a double integer ,two digits, then this( the following line) is true {Faren = (Celsius.nextDouble()* 9/5) + 32;}//then 0 = Celsius with two digits * 9/5) + 32;) /**the actual calculation that is computed using the input value received by the variable Celsius. The input value of Celsius is the number the user enters when prompted)**/ {if(Faren <32)>110) {System.out.println("Ouch...that's very hot!!");} //prints lines if the Faren is less than 32 and more than 110-works properly, could probably be coded within the above line in a tighter format. System.out.println("The approximate temperature conversion is "); System.out.println(Faren + " degrees FARENHEIT"); //prints line then product of Faren calculated from user input System.out.println("I hope you aren't to cold or hot!");//prints line on screen after every conversion }}}}// ends all code blocks of which there are three not ended inside the code and the entire code = }}}} /** good information on java.util.Scanner can be found here - **www.cs.williams.edu/~jeannie/cs136/scanner.pdf **other java info can be found here - **http://bucarotechelp.com/design/jseasy/96012902.asp **This code and accompanying tutorial comments are free information for all to use. No credit required**/