Java tutorial for beginners and professionals with examples on Basics, OOPs, Methods, Overloading, Overriding, Inheritance, Polymorphism, Interfaces, Packages, Abstract classes, String handling, Exception handling, IO, Collections, Multithreading, Serialization and more.
We are going to start learning Java, which is a programming language. So, let us have a brief look at programming language first.
What is language?
A way of communication is known as language. e.g. Hindi, English, etc.
What is a Program?
A set of instructions which is used to perform a specific task.
What is a Programming Language?
An artificial language is used to write programs that can be translated into machine language and executed by computer with the help of some special software.
What is a Platform?
Dictionary meaning: A raised level surface on which things can stand.
In programming: Hardware or software on which a program can execute/run.
e.g. – c, c++, Java etc.
What is Java?
Java is a high-level programming language and is also known as the platform because of its JRE (java runtime environment).
Brief History of Java.
Java language project was initially started in June 1991 by James Gosling, Mike Sheridan, and Patrick Naughton. An oak tree stood outside Gosling’s office at that time and java was named as oak initially. It was later renamed Green and was later renamed Java from Java Coffee.
The base concept of Java language project.
Write once, run anywhere (WORA) – that means Java program can run anywhere and on any platform. When Java code is compiled it is converted into byte code. Now only this byte code is needed to run using JVM, no need for source code and recompilation.
Java released versions:
1. JDK Alpha and Beta (1995)
2. JDK 1.0 (23rd Jan, 1996)
3. JDK 1.1 (19th Feb, 1997)
4. J2SE 1.2 (8th Dec, 1998)
5. J2SE 1.3 (8th May, 2000)
6. J2SE 1.4 (6th Feb, 2002)
7. J2SE 5.0 (30th Sep, 2004)
8. Java SE 6 (11th Dec, 2006)
9. Java SE 7 (28th July, 2011)
10. Java SE 8 (18th March, 2014)
11. Java SE 9 (21th Sept, 2017)
12. Java SE 10 (20th March, 2018)
13. Java SE 11 (25th Nov, 2018)
14. Java SE 12 (19th March, 2019)
Java tutorial:
- Features of Java | New Java Features
- JVM | Java Virtual Machine
- JVM JRE JDK Architecture | JVM vs JRE vs JDK
- Naming Conventions in Java
- Java Variables
- Java Hello World Example
- Object-oriented programming style
- Objects and Classes in Java
- Java OOPs Concepts
- Abstraction in java
- Encapsulation in java
- Polymorphism in java
- Method overloading in java
- Java Method overriding
- Java Dynamic Method Dispatch | Runtime Polymorphism In Java
- Java Association Aggregation And Composition
- Java Inheritance
- Java Command Line Arguments
- Java Abstract Class
- Java Interface
- Java Constructor
- Package in java
- Java Access Modifier
- Java Static import
- Java Package class
- Java this keyword
- Java Instance Initializer block
- Java Super keyword
- Java Static keyword
- Java final keyword
- Java String handling
- Java String comparison
- Java String Concatenation
- Java Substring
- Create Immutable class in java
- Java toString() method
- Java string class methods
- Java String charAt() Method
- Java String startsWith() | Java String endsWith()
- Java String indexOf() | Java String lastIndexOf()
- Java String toLowerCase | Java String toUpperCase
- Java String intern() Method
- Java String length() Method
- Java String trim() Method
- Java StringBuffer
- Java StringBuffer append() Method
- Java StringBuffer insert() Method
- Java StringBuffer replace() Method
- Java StringBuffer delete() Method
- Java StringBuffer reverse() method
- Java StringBuffer capacity() Method
- Java StringBuffer ensureCapacity() Method
- Java StringTokenizer
- Java StringBuilder
- Java StringBuilder append() method
- Java StringBuilder insert() method
- Java StringBuilder replace() method
- Java StringBuilder delete() method
- Java StringBuilder reverse() method
- Java StringBuilder capacity() method
- Java StringBuilder ensureCapacity() method
- Exception handling in java
- try and catch blocks in java
- Java Multiple catch blocks
- Java Nested try block
- Java finally Keyword
- Java throw keyword
- Java throws keyword
- Java Exception propagation
- Java Exception handling with method overriding
- Java Custom exception
- Java Throwable class methods
- Java Marker interface
- Java Exception handling tutorial
- Java Multithreading Tutorial
- Java input output tutorial
- Java Int
- Java If else
- Java Switch Statement
- Java For Loop
- Java Enhanced For Loop
- Java While Loop
- Java Do While Loop
- Java Break Statement
- Java Continue Statement
- Program to print alphabets both in small and capital
- Java Arithmetic Operations Example
- Java Armstrong Number Program
- Java Even Odd Program
- Java Factorial Program
- Java Factorial Program Using Recursion
- Java Fibonacci Series Program
- Java Palindrome Number Program
- Java Prime Number Program
- Java Swap Two Numbers Without Using Third Variable
- Java Swap Numbers
- Java Reverse Number
- Java Calculate Circle Area
- Java Calculate Circle Perimeter
- Calculate Rectangle Area using Java Example
- Java Calculate Rectangle Perimeter
- Java Leap year
- Java List Even Numbers
- Java List Odd Numbers
- Java Floyd Triangle
- Java Generate Pyramid For a Given Number
- Java Generate Pyramid Triangle
- Java examples programs
- Java String to int
- Java String to integer with leading zeros
- Java Int to string
- Java String to double
- Double to string in java
- String to long in java
- Long to string in java
- String to boolean in java
- Boolean to string in java
- Char to string in java
- String to char in java
- Char array to string in java
- String to date in java
- Date to string in java
- Ascii to string in java
- Float to string in java
- String to arraylist in java
- java random class tutorial
- How to generate random numbers in a given range in java?
- How to generate same random number sequence every time?
- how to create random string in java?
- how to create random alphanumeric in java?
- java number pattern programs
- java star pattern programs
- Object cloning in java
- Find duplicate elements in an array in java
- Find second largest element in an array in java
- Check the equality of two arrays in java
- Find all pairs of elements in an integer array whose sum is equal to a given number
- Find continuous sub array whose sum is equal to a given number in java
- Find the intersection of two arrays in java
- Separate zeros from non-zeros in an integer array in java
- Find all the leaders in an integer array in java
- Find a missing number in an integer array in java
- Array to ArrayList and an ArrayList to array in java
- Count occurrences of each element in an array in java
- Reverse an array without using an additional array in java
- Remove duplicate elements from an array in java
- Find union and intersection of multiple arrays in java
- Find the most frequent element in an array in java
- Java interview programs
- java array interview programs
- Shallow copy and deep copy in java
- java visitor design pattern
- java memento design pattern
- how to get hostname from ip address in java?
- Java networking tutorial
- hashCode and equals method in java
- HashMap internal working in java
- How hashmap stores null key?
- how hashset works internally in java?
- concurrency issues in java
- Java Runtime exec() method
- Shutdown system in Java
- Shutdown windows system in Java
- Restart system in Java
- Java Runtime availableProcessors
- Java Runtime freeMemory() and totalMemory() method
- Arrays in Java
- Java Operators
- Java Type Casting
- Java Wrapper Classes
- test
- Inner Class Java
- String Performance Hints
- replace all square brackets in a string java regex
- java get screen size
- VM options javafx
- Android manifest cleartext traffic permitted
- Get minimum value in Arraylist java
- Get maximum value in Arraylist java
- jFrame set size
- Javafx grid center
- Seconds To Hours Java
- Executing an EXE from Java and getting input and output from EXE
- jLabel change font style
- jLabel text center
- Java int to roman
- Get player from UUID
- java.awt.event is not accessible
- import math java
- Java full screen jFrame
- RGB to HEX java
- ANSI Colors Java
- Console log java
- Java console and terminal color
- Change java version command line debian
- Ubuntu change java version Linux
- Java create window
- Change font size java swing
- Random colors java
- Java every second
- Javafx tableview remove all rows
- java age from date
- Left fold java
- close a jframe in java with an if statement
- Lombok maven dependency
- Bukkit scoreboard
- Spigot repeating task
- Java log base 2
- Java get next enum
- Java create jframe
- sum of digits in java
- set java_home in mac
- Top Wishlisted games on steam
- Get class by name java
- Append character at first position in StringBuilder java
- Java get mouse position on screen
- Sleep in java
- Maven java 8
- Error:java: Source option 5 is no longer supported. Use 6 or later.
- Error:java: Source option 5 is no longer supported. Use 7 or later.
- Zufallszahlen in java
- Send action bar spigot
- Java FileWriter new line
- Random element from a list java
- Java execution time
- Exit from jshell
- Copy to clipboard java
- Upgrade java 8 to 11 in ubuntu
- Java stream find specific element
- Show dialog fragment from adapter
- Detect operating system in java
- Best ASCII art characters
- Bukkit inventory set name
- Spring boot maven run with profile
- Divide with float java
- SpringBoot starter jpa
- Regrex for letter in java
- Hardware assisted virtualization and data execution protection must be enabled in the BIOS
- Spigot spawn entity
- Save map in file java
- Max value in priority queue java
- No Java files found that extend CordovaActivity
- Echo java_home in windows cmd
- Java Data Types