[java] What is the difference between method overloading and overriding?

Method overriding is when a child class redefines the same method as a parent class, with the same parameters. For example, the standard Java class java.util.LinkedHashSet extends java.util.HashSet. The method add() is overridden in LinkedHashSet. If you have a variable that is of type HashSet, and you call its add() method, it will call the appropriate implementation of add(), based on whether it is a HashSet or a LinkedHashSet. This is called polymorphism.

Method overloading is defining several methods in the same class, that accept different numbers and types of parameters. In this case, the actual method called is decided at compile-time, based on the number and types of arguments. For instance, the method System.out.println() is overloaded, so that you can pass ints as well as Strings, and it will call a different version of the method.

Examples related to java

Under what circumstances can I call findViewById with an Options Menu / Action Bar item? How much should a function trust another function How to implement a simple scenario the OO way Two constructors How do I get some variable from another class in Java? this in equals method How to split a string in two and store it in a field How to do perspective fixing? String index out of range: 4 My eclipse won't open, i download the bundle pack it keeps saying error log

Examples related to overloading

What is the difference between dynamic and static polymorphism in Java? TypeScript function overloading Constructor overload in TypeScript What is the difference between method overloading and overriding? Differentiate between function overloading and function overriding How do I use method overloading in Python? How can I create a Java method that accepts a variable number of arguments? Python function overloading PHP function overloading What is function overloading and overriding in php?

Examples related to overriding

How to underline a UILabel in swift? How to 'update' or 'overwrite' a python list maven command line how to point to a specific settings.xml for a single command? How to override the properties of a CSS class using another CSS class What is the difference between dynamic and static polymorphism in Java? Overriding css style? Android Overriding onBackPressed() What is the 'override' keyword in C++ used for? Why do we have to override the equals() method in Java? Can overridden methods differ in return type?