Java Lesson 2 - Variables - using int & double

Publicado em: 03 Março 2015
no canal de: NotADoctor

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Java Lesson 2 - intro to variables
I DID NOT CREATE KODING.COM, I AM ONLY USING IT TO SHOW YOU GUYS HOW TO CODE
Hey guys, if you don't feel like watching the video, then I can explain to the steps of creating variables here:
Steps
1: Open http://www.koding.com/
2. Create a file called variables.java
3. type
public class variables {
public static void main(String args[]) {
4. Then you are going to type in a variable.
5. In my video, I created a variable called age and set it equal to 20
age = 20;
6. I showed the age = 20; wouldn't work by itself, so I explained that you need to put either an int or double on the beginning of your variables.
7. I printed out the variable in the terminal below
8. First I compiled the variable by typing in javac variables.java and then I typed java variables to run the program.
9. The terminal successfully printed out 20.
10. When I changed int age = 20; to double age = 20; The terminal printed out 20.0
11. The reason why the terminal printed out 20.0 is because a double turns the number into a decimal rather than an integer.
12. Well that's all for today guys! See you next time!

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