Java Environment Setup

To execute a java program, we want to compile the java source code (.class file) to JVM.

To develop, compile and execute a java program we need to install Java in our system. To check whether java is already installed in your PC’s, open Command Prompt(CMD) and type,

java -version

If it shows like this,

java version "1.8.0_251"
Java(TM) SE Runtime Environment (build 1.8.0_251-b08)
Java HotSpot(TM) Client VM (build 25.251-b08, mixed mode, sharing)

Java is installed in your, if it shows any error you want to download java from here https://www.java.com/en/download/

After downloading java, install it in your system and follow the steps to set path for windows,

Step 1: Press Win+R to open Run dialog box and type sysdm.cpl and hit enter, this will open system properties.

Step 2: Clicking on the Advanced tab settings in the system properties dialog box.

Step 3: Clicking on the Environment Variables button at the bottom right in advanced tab.

Step 4: Click on Environment variable, in System variable, click on New button.

Step 5: In variable name, type JAVA_HOME and in variable path add the path where Java is installed, by default, java is installed in C:\Program Files\Java\jdk-12.0.1

Now paste the copied path C:\Program Files\Java\jdk-12.0.1\bin in variable path and click on ok and save the settings.

Now open your command prompt and type java -version, now it will show the version of java.

We can also set temporary path for java using Command Prompt using the below command,

C:\Users\neuralbeast>set path=C:\Program Files\Java\jdk-12.0.1\bin

and hit enter. This will set temporary path for java.