It is about installing JDK and Eclipse.

1. Installing JDK and eclipse

2. Start!!??
Java is a simple programming language.
Writing
compiling
and debugging a program is easy in java.

3. Start programming with java
Install JDK (java development kit)
Install eclips (IDE)

4. What is JDK & eclips?
JDK enables us to develop and run a java program
Eclips is the environment where we write the codes

5. JDK installation

11. Eclips
Just unzip the eclips file
Right click the zip file and
Select extract all

12. Open the extracted file
Click this icon

13. Eclips environment
Created packages and
classes are here
Write codes here
Display the result here

14. Write the first code inside eclips
public class FirstExample {
public static void main(String args[]){
System.out.println("I am a student ");
}
}

15. Learn More about JDK

16. JDK (java development kit)
is a software development environment used for developing Java applications and applets.
It is a superset of a JRE and javac compiler.

17. Compiler
(javac)
JVM
JRE
JDK
Source code
bytecode

18. Compiler (javac)
A compiler is a computer program that transforms source code written
in a programming language into another computer language.
Java source code Bytecode
Compiler

19. JRE (Java Runtime Environment)
JVM(Java Virtual Machine) = interpreter
A (JVM), interprets compiled (bytecode) for a computer's processor
(hardware)
JVM
JRE

20. Let’s practice how it works!!!

21. Running java code/source code via CMD

22. Make sure if javac (java compiler) is exist.
Run CMD and write these commands and click enter

23. The result should be as the following picture
So You have java compiler!!
This is the directory where
the java compiler is located

24. Define the java compiler directory path
1- Open System properties
2- Go to Advanced tab
3- Click ‘Environment variables’
4- Under ‘System Variables’ scroll down to
find PATH. Edit the entry and add JDK path.
5- Click OK and close the windows.
Note: you can copy the compiler directory in the
previews picture and paste it to variable value.

25. Change the directory. Here the
source code is located on
desktop.
Compile the source file
via java compiler(javac)
Run the compiled file via
jvm
Display the result/ output
Run test.java program in CMD