How to Install Java in Windows 7
- Open MyComputer > Local Disk C: > Program Files > Common Files and see if a folder named "Java" is present.
- If the "Java" folder is present then you need to check if "environment variables path" is set or not
- If java dose not exist then you need to download java jdk from Oracle website. Accept license agreement before downloading. Select your os(32 or 64-bit) and download.
- Java is open source software. It provides free download to the users and developers.
- There are two kinds of java packages, one is jdk :- Java Development Kit, and other is jre:- Java Runtime Envirement
- JDK:- It is used by developers to develop java based programmes like standalone(Disktop) and server applications.
- JRE:- Is used to by the operating system to run java applications in the local computer.
- JRE will convert java bite code instructions to system understandable Machine code which is executed by the system.
- To download java for free click below link
Download and install java jdk.
- Install Java from the download.
- Now Installation is successfull but its not yet over, you need to set environment variables
- Open command prompt and type javac in command line.
- Then it shows 'Javac' is not recognized as an internal or external
command.
- You need to set environment variable path to avoid this java error.
- In order to set path right click on Computer and click properties there you can find advanced system settings on left side pannel of the window.
- Now click on Advanced tab.
- Under Advanced tab click environment variables button as shown below.
- On clicking the button you find a Environment Variable popup.
- Now under User variables click "New" and set
- variable name : PATH and variable value : C:\Program Files\Java\jdk1.7.0\bin .
- Then click OK.
- Now again open command prompt to check if java is installed or not.
- To do this you need to type javac on the command line It will show all java commands as shown in below image.It means that java has been successfully installed on your computer.
- Now you can use notepad to write the code or download any IDE(Integrated Development Environment) and start programming(Starting with eclipse).
