History of Java Programming

History of Java

• Developed by James Gosling at Sun Microsystems (now owned by Oracle Corporation)
• Initially called "Oak," renamed to Java in 1994
• First publicly available in 1995

Key Features

• Object-Oriented Programming (OOP): Java is an object-oriented language that supports encapsulation, inheritance, and polymorphism
• Platform Independence: Java code can run on any platform that has a Java Virtual Machine (JVM) installed
• Simple and Familiar Syntax: Java syntax is based on C++ and is easy to learn for developers familiar with C++

Java Virtual Machine (JVM)

• JVM: A program that runs Java bytecode on a computer
• Bytecode: Platform-independent, intermediate code generated by the Java compiler
• Just-In-Time (JIT) Compilation: JVM compiles bytecode into native machine code at runtime for better performance

Java Syntax

• Variables and Data Types: Java has primitive types (e.g., int, boolean) and reference types (e.g., String, arrays)
• Operators and Control Structures: Java supports various operators (e.g., arithmetic, comparison) and control structures (e.g., if-else, loops)
• Methods and Functions: Java methods are blocks of code that can be reused; functions are not a built-in concept in Java

Java Applications

• Android Apps: Many Android apps are built using Java
• Web Applications: Java is used in web development for building enterprise-level applications
• Desktop Applications: Java is used for building desktop applications, such as NetBeans and Eclipse

Java Editions

• Java Standard Edition (SE): For developing desktop applications and applets
• Java Enterprise Edition (EE): For developing large-scale, multi-tiered, and scalable applications
• Java Micro Edition (ME): For developing applications for resource-constrained devices

History of Java

• Java was developed by James Gosling at Sun Microsystems, now owned by Oracle Corporation
• Initially called "Oak," it was renamed to Java in 1994
• Java was first publicly available in 1995

Key Features

• Java is an object-oriented language that supports encapsulation, inheritance, and polymorphism
• Java code is platform-independent and can run on any platform with a Java Virtual Machine (JVM) installed
• Java syntax is based on C++ and is easy to learn for developers familiar with C++

Java Virtual Machine (JVM)

• The JVM is a program that runs Java bytecode on a computer
• Bytecode is platform-independent, intermediate code generated by the Java compiler
• The JVM compiles bytecode into native machine code at runtime using Just-In-Time (JIT) compilation for better performance

Java Syntax

• Java has primitive types (e.g., int, boolean) and reference types (e.g., String, arrays)
• Java supports various operators (e.g., arithmetic, comparison) and control structures (e.g., if-else, loops)
• Java methods are blocks of code that can be reused, but functions are not a built-in concept in Java

Java Applications

• Many Android apps are built using Java
• Java is used in web development for building enterprise-level applications
• Java is used for building desktop applications, such as NetBeans and Eclipse

Java Editions

• Java Standard Edition (SE) is for developing desktop applications and applets
• Java Enterprise Edition (EE) is for developing large-scale, multi-tiered, and scalable applications
• Java Micro Edition (ME) is for developing applications for resource-constrained devices