what is Java API?

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I know API is a set of rules and protocols.can anyone explain me with example what is a Java API and its functionality...


You can find Java API here http://download.oracle.com/javase/6/docs/api/index.html

You could say it is the Java library and you can use it like building blocks for your software and that way speed up your development.

For example:

ArrayList is one of the gazilion classes in the API.

import java.util.ArrayList; // We say the old mighty compiler that we want to use this class

// we create an ArrayList object called myList that will hold objects of type Beer
ArrayList<Beer> myList = new ArrayList<Beer>();

Beer b = new Beer();

myList.add(b); // the class ArrayList has a function add, that adds an object(a Beer);

myList.size(); // will give you the size of the ArrayList. 

myList.remove(b); // will remove our beloved Beer :)

If you want to know what else can you do with the ArrayList you should check out the API or when typing myList. CTRL + SPACE will give you all the functions avaible :)

Good luck!

[PDF] Java Application Programming Interface (API) Java application , Java Application Programming Interface (API) is the area of Java development kit (JDK). An API includes classes, interfaces, packages and also their methods,� The full form of API is Application Programming Interface. It is a document which gives you the list of all the packages, classes, and interfaces, along with their fields and methods. Using these API’s, the programmer can know how to use the methods, fields, classes, interfaces provided by Java libraries.


Exactly what you described, just for the Java language.

Java API is a set of libraries that are found in the standard Java distribution, and is called the JRE (Java Runtime). So, every time you use something like Integer as a class for representing integers, you're using Java's API.

But since Java is so broad, and boundaries between various distributions (Java SE, Java EE, Java ME) aren't always clear at first sight, the terminology "Java API" might be misleading.

So, treat it as the way you communicate your code to Java's libraries.

List of Java APIs, API Specification. This document is the API specification for the Java™ Platform, Standard Edition. See: Description� An application programming interface (API), in the context of Java, is a collection of prewritten packages, classes, and interfaces with their respective methods, fields and constructors. Similar to a user interface, which facilitates interaction between humans and computers, an API serves as a software program interface facilitating interaction.


general api explanation

JAVA API

In a nutshell, the API is used from a user point of view as the reference which classes and methods are available in this specific language

What is API in Java? | How It Works | Need & Skill, The full form of API is Application Programming Interface. It is a document which gives you the list of all the packages, classes, and interfaces,� Java application programming interface (API) is a list of all classes that are part of the Java development kit (JDK). It includes all Java packages, classes, and interfaces, along with their methods, fields, and constructors. These prewritten classes provide a tremendous amount of functionality to a programmer.


The JAVA API is a collection of classes and functions that can be used to create programs....

A programming language is a general term for a computer-program language.....while API is the technical term for the actual set of features implemented using functions and classes...

The Java API is implemented using the JAVA JDK(Java Development Kit) from Oracle/Sun.

Java Platform, Standard Edition 7 API Specification, API is application programming interface. These are included in all programming languages and one can use them to build applications. For example java� Java API is a set of libraries that are found in the standard Java distribution, and is called the JRE (Java Runtime). So, every time you use something like Integer as a class for representing integers, you're using Java's API.


What is Java API and what is its use?, An application programming interface (API), in the context of Java, is a collection of prewritten packages, classes, and interfaces with their� Java SE The Java Platform, Standard Edition (Java SE) APIs define the core Java platform for general-purpose computing. These APIs are in modules whose names start with java. JDK The Java Development Kit (JDK) APIs are specific to the JDK and will not necessarily be available in all implementations of the Java SE Platform.


What is Java API?, The Java API is a library of prewritten classes, that are free to use, included in the Java Development Environment. The library contains components for managing � A Java Application Programming Interface (API) can refer to the Java development kit (JDK) or APIs that are accessible using Java. Is JSON an API? JSON or JavaScript Object Notation is an encoding scheme that is designed to eliminate the need for an ad-hoc code for each application to communicate with servers that communicate in a defined way.


What is an Application Programming Interface in Java (Java API , Okay, but what is exactly is an API? Well, API stands for Application Programming Interface. In short, it's a set of rules that controls the interaction� Java SE The Java Platform, Standard Edition (Java SE) APIs define the core Java platform for general-purpose computing. These APIs are in modules whose names start with java. JDK The Java Development Kit (JDK) APIs are specific to the JDK and will not necessarily be available in all implementations of the Java SE Platform.