Easy java installation & practice
Download as PPTX, PDF0 likes169 views
This document serves as an introductory guide for Java programming targeted at beginners, detailing the installation of Java Development Kit (JDK) and Eclipse Integrated Development Environment (IDE). It outlines the process of writing, compiling, and debugging Java code, exemplified with a sample program that outputs a statement. Additionally, it provides instructions for setting up the Java compiler and executing code through the command prompt.
![Write the first code inside eclips
public class FirstExample {
public static void main(String args[]){
System.out.println("I am a student ");
}
}
The program will display “I am a student” as an output](https://image.slidesharecdn.com/easyjavainstallationpractice-160819053551/85/Easy-java-installation-amp-practice-14-320.jpg)
Easy java installation & practice
- 1. Practice for java beginners Java programming Nooria Esmaelzade 2016
- 2. Start!!?? Java is a simple programming language. Writing compiling and debugginga 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
- 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 "); } } The program will display “I am a student” as an output
- 15. Learn More about JDK
- 16. JDK (java development kit) It is a software development environment used for developing Java applications and applets. It is a superset of a JRE and javac compiler.
- 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