Core Java Introduction

Java is a programming language and computing platform first released by Sun Microsystems in 1995. It is the underlying technology that powers state-of-the-art programs including utilities, games, and business applications. Java runs on more than 850 million personal computers worldwide, and on billions of devices worldwide, including mobile and TV devices.
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Java is one of the most popular language in the field of software programming. Because of its large number of important and robust features it is widely accepted in software programming. Java has a large variety of Features.
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Programming languages are used for controlling the behavior of a machine or a computer. There are numerous Programming Languages available for the programmer to use.
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In 1991, a small group of Sun engineers called the "Green Team" believed that the next wave in computing was the union of digital consumer devices and computers. Led by James Gosling, the team worked around the clock and created the programming language that would revolutionize our world - Java.
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JDK is a software package which is used to develop and deploy java applications.
Java RunTime Environment (JRE) is required to run Java applications interpretively on a target hardware and operating system platform.
A Java virtual machine (JVM) is a virtual machine that can execute Java bytecode. It is the code execution component of the Java platform.There are 5.5 billion JVM-enabled devices according to the Sun Microsystems.
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For setting up the Environment of Java some changes have to made in the System settings. To know more about the Environment set of Java please click the link above.
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Identifiers, Variable and Constant reference program locations in computer memory that store values that are related to those identifiers.
A Keyword is a word or identifier that has a particular meaning to the programming language. Keywords are pre-defined in the programming languages.
Data type or simply type is a classification identifying one of various types of data, such as real-valued, integer or Boolean.
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Java have three type of platforms, Enterprise, Standard and Mobile Platform. We can also observe our program that how it executes.
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Java have three type of platforms, Enterprise, Standard and Mobile Platform. We can also observe our program that how it executes.
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Here is the initial level Java programs.