How to install JDK

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 Installing JDK 

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Before going to install Java, you need to know about what is Java and its features.  You can know about Java by clicking this link given below,

" Introduction to JAVA "

JDK

JDK is a application which is used to execute Java programs in a system.  JDK stands for "Java
Development Kit" and J2SE stands for "Java 2 Standard Environment".  There lot of versions in JDK and J2SE versions.  You can download any version from internet.  Java is open source language.  So, anyone can download it.  Versions of JDK & J2SE,
    1. JDK Alpha & Beta
    2. JDK 1.0
    3. JDK 1.1
    4. J2SE 1.2                   
    5. J2SE 1.3
    6. J2SE 1.4
    7. J2SE 5.0
    8. Java SE 6
    9. Java SE 7
    10. Java SE 8 (Last version for 32-bit(x86) systems.)
    11. Java SE 9 to Java SE 14
    12. Java SE 15  (Under development)

1. Download JDK or Java SE development kit

You can easily download the JDK software from internet.  I have given link to download JDK for your system.  Based on your system type and OS you can download it.

" Java SE Development kit version 14.0.2 for 64-bit only "

" Java SE Development kit version 8u261 for both 32 and 64-bit "

There are separate JDK software for different OS.  Download correct software based on your OS and bit type.  

2. Installing Progress


After downloading the JDK from internet.  Just double tap on that file.  If you downloaded installer, you would  simply tap on that installer.  If you downloaded as archive, you would needed to unzip it, and tap on .exe file.  The dialogue box will be open, you will need to press "next" for to continue install java on your system.  It will ask you to where do you want to install the JDK, you can select your location to install JDK. The installation process will be continued.  After the successful installation, you need to close that dialogue box.

3. Checking whether JDK is installed or not

In windows 10, go to search bar and search for "Control Panel", in other OS open "Run" by pressing "Winkey + R" simultaneously.  In that search for control panel.  
 
In top right corner choose "view by" as "Category".  After that, choose sub-link "Uninstall programs" of the Programs.  In that, if there is Java icon, you installed JDK correctly.  Likewise you can uninstall other software from your system, whatever you don't want to have in your system.
In other way, you can check the JDK is installed or not by viewing like this,

This PC --> Local Disk (C) -->  Program Files --> Java -->  jdk-14.0.2 (version of java that you installed in your system) --> bin

In this bin file, all of the packages of java language has been inserted.

In other way, go to Command Prompt and type like this, 
    1. javac -version -----> The version of JDK will be printed.
    2. java -version ------> The details of JDK will be printed.

After installation, for java program execution, user must set the path in environment variable.  In upcoming post we will see about how set path in your system.

" How to set path in windows "

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