Overloading and overriding statements in Java

Question

What is the difference between operator overloading and operator overriding?

Are they the same in inheritance and console program?

Answer 1

Overloading and overriding operators is not supported in Java.

Check the following link: http://java.sun.com/docs/white/langenv/Simple.doc2.html

2.2.7 More operator overload

No tools provided by programmers can overload standard arithmetic operators. Once again, the consequences of operator overloading can be just as easily achieved by declaring the class, the corresponding instance variables, and the corresponding methods of manipulating these variables. Eliminating the operator overload leads to great simplification of the code.

Answer 2

You cannot override (and overload) statements in Java.

In some other languages ​​you can, and the difference between overloading and operator overriding is the same as between function overloading and rewriting. For example. The Scala operators are just functions.

Answer 3

You can overload the operator in C ++, but not in Java. I wonder if you meant method overloading and method overriding? Method overloading has two definitions for the same method signature. For example,

int sum(int var1, int var2) { return (var1+var2); } int sum(int var1, int var2, int var3) { return (var1+var2+var3); } 

In object-oriented programming, you redefine (redefine) a function that is inherited from the upstream (base) class. In a class hierarchy, when a function (method) in a subclass has the same name and type signature as the method in its superclass, then it is considered that the method in the subclass overrides the method in the superclass.

Answer 4

There is a javac plugin (annotation processor such as Lombok) called Java-OO , which adds operator overloading to Java.

This makes it easy to add operator overloading to your classes. In addition to this, many of the built-in Java API classes also support operator overloading when using this plugin. (For example: instead of list.get (6) or map.get ("hello") you can make a list [6] and display ["hello"])

All you have to do is include .jar in the classpath when compiling with javac.

There are plugins for all major IDEs: Eclipse, Netbeans and IntelliJ IDEA.

Answer 5

There is no operator overload / override in Java.