1-Java Introduction, Features, Strcuture, Data Types-15-07-2024.pdf

Introduction Topic/Courseto JAVA Sub-Topic (Example: name of college) Program Internal Why and How Java? History of Java Why Java? Where Java? Difference between JDK, JRE, JVM Compiling our first Program Install the JDK if you don't have installed it. Set path of th...

Introduction Topic/Courseto JAVA Sub-Topic (Example: name of college) Program Internal Why and How Java? History of Java Why Java? Where Java? Difference between JDK, JRE, JVM Compiling our first Program Install the JDK if you don't have installed it. Set path of the jdk/bin directory. Create the java program (preferred notepad) Compile and run the java program (Assuming program is saved as Hello.java For compiling : javac Hello.java For executing : java Hello 1 public class Main 2 { 3 public static void main(String[] args) 4 { 5 System.out.println(“Welcome to FACE”); 6 } 7 } 8 9 10 11 12 13 14 15 Output Welcome to FACE During Compile time After writing our first program, we compile them. Hello.class can be used in different operating system During runtime Types of Java Application Standalone Application Web Application Enterprise Application Mobile Application Types of Java Editions Java SE – Standard Edition Java EE – Enterprise Edition Java ME – Micro Edition JavaFX JVM Architecture JVM gives the definitions … JVM works with … Memory area Loads code Class file format Verifies code Register set Executes code Garbage-collected heap Provides runtime Environment Fatal error reporting etc. JVM Architecture Path Setting Temporary Path Permanent Path Use of editors – Sublime editor, code block Notepad – Execute a program Why is JAVA Platform Independent? Why is JAVA both interpreted and compiled language? Why is JAVA both interpreted and compiled language? Why is JAVA slow? THANK YOU