Java Language
- Getting started with Java Language
- Top 10 Java Errors with Solutions
- Awesome Book
- Awesome Community
- Awesome Course
- Awesome Tutorial
- Awesome YouTube
- 2D Graphics in Java
- Alternative Collections
- Annotations
- Apache Commons Lang
- AppDynamics and TIBCO BusinessWorks Instrumentation for Easy Integration
- Applets
- Arrays
- Asserting
- Atomic Types
- Audio
- Autoboxing
- Basic Control Structures
- Benchmarks
- BigDecimal
- BigInteger
- Bit Manipulation
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- Bytecode Modification
- C++ Comparison
- Calendar and its Subclasses
- Character encoding
- Choosing Collections
- Class - Java Reflection
- Classes and Objects
- Classloaders
- Collection Factory Methods
- Collections
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- Common Java Pitfalls
- Comparable and Comparator
- CompletableFuture
- Concurrent Collections
- Concurrent Programming (Threads)
- Console I/O
- Constructors
- Converting to and from Strings
- Creating Images Programmatically
- Currency and Money
- Date Class
- Dates and Time (java.time.*)
- Default Methods
- Dequeue Interface
- Disassembling and Decompiling
- Documenting Java Code
- Dynamic Method Dispatch
- Encapsulation
- Enum Map
- Enum starting with number
- Enums
- EnumSet class
- Exceptions and exception handling
- Executor, ExecutorService and Thread pools
- Expressions
- File I/O
- FileUpload to AWS
- Fluent Interface
- FTP (File Transfer Protocol)
- Functional Interfaces
- Generating Java Code
- Generics
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- Hashtable
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- Immutable Class
- Immutable Objects
- Inheritance
- InputStreams and OutputStreams
- Installing Java (Standard Edition)
- Interfaces
- Iterator and Iterable
- Java Agents
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- Java deployment
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- Java Memory Model
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- Java Performance Tuning
- Java Pitfalls - Exception usage
- Java Pitfalls - Language syntax
- Java Pitfalls - Nulls and NullPointerException
- Java Pitfalls - Performance Issues
- Java Pitfalls - Threads and Concurrency
- Java plugin system implementations
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- LocalTime
- log4j / log4j2
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- Maps
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- Nashorn JavaScript engine
- Nested and Inner Classes
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- Non-Access Modifiers
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- Object Class Methods and Constructor
- Object Cloning
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- Optional
- Oracle Official Code Standard
- Packages
- Parallel programming with Fork/Join framework
- Polymorphism
- Adding behaviour by adding classes without touching existing code
- Method Overloading
- Method Overriding
- Polymorphism and different types of overriding
- Virtual functions
- Preferences
- Primitive Data Types
- Process
- Properties Class
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- Security & Cryptography
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- Splitting a string into fixed length parts
- Stack-Walking API
- Streams
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- StringBuilder
- Strings
- sun.misc.Unsafe
- super keyword
- The Classpath
- The Java Command - 'java' and 'javaw'
- The java.util.Objects Class
- ThreadLocal
- TreeMap and TreeSet
- Type Conversion
- Unit Testing
- Using Other Scripting Languages in Java
- Using the static keyword
- Using ThreadPoolExecutor in MultiThreaded applications.
- Varargs (Variable Argument)
- Visibility (controlling access to members of a class)
- WeakHashMap
- XJC
- XML Parsing using the JAXP APIs
- XML XPath Evaluation
- XOM - XML Object Model
Java Language Polymorphism
Introduction
Polymorphism is one of main OOP(object oriented programming) concepts. Polymorphism word was derived from the greek words "poly" and "morphs". Poly means "many" and morphs means "forms" (many forms).
There are two ways to perform polymorphism. Method Overloading and Method Overriding.
Remarks
Interfaces are another way to achieve polymorphism in Java, apart from class based inheritance. Interfaces define a list of methods which form the API of the program. Classes must implement an interface by overriding all its methods.
Polymorphism Related Examples
- Adding behaviour by adding classes without touching existing code
- Method Overloading
- Method Overriding
- Polymorphism and different types of overriding
- Virtual functions
