Configure JAVA_HOME/JRE_HOME Environment Variables For Linux

  1. Home
  2. Configure JAVA_HOME/JRE_HOME Environment Variables For Linux

Check the java version with the command java -version if it successfully installed then you can see the version else you will see the below image.

Java –version

If you get result similar to the below image you do not have Java installed. The list shows you which packages in your system have Java available and you have to install it.

chkjava

If you do not have the correct version of Java, please download Java 11 from here. ( Note: Oracle login might be required, if you do not have you can register for free and download)

 

Installation Steps:
  1. Check for Java Installation
  1. Login to Ubuntu
  2. Check if Java is not already installed or not using command

    3. java -version

    Installing OpenJDK 8:

  3. To install OpenJDK 8, execute the following command:

    4. sudo apt-get install openjdk-8-jre

  4. This will install the Java Runtime Environment (JRE). If you instead need the Java Development Kit (JDK), execute the following command:

    5. sudo apt-get install openjdk-8-jdk

  5. To set the JAVA_HOME environment variable, which is needed for some programs, first find out the path of your Java installation:

    6. sudo update-alternatives –config java

    It returns something like:

    There are 2 choices for the alternative java (providing /usr/bin/java).

    Selection Path Priority Status:

    * 0 /usr/lib/jvm/java-8-oracle/jre/bin/java 1062 auto mode

    1 /usr/lib/jvm/java-6-openjdk-amd64/jre/bin/java 1061 manual mode

    2 /usr/lib/jvm/java-7-oracle/jre/bin/java 1062 manual mode

    Press enter to keep the current choice[*], or type selection number:

    The path of the installation is for each:

    1. /usr/lib/jvm/java-8-oracle
    2. /usr/lib/jvm/java-6-openjdk-amd64
    3. /usr/lib/jvm/java-7-oracle
  6. Copy the path from your preferred installation and then edit the file /etc/environment:

    7. sudo nano /etc/environment

  7. In this file, add the following line (replacing YOUR_PATH by the just copied path):

    8. JAVA_HOME=”YOUR_PATH”

    That should be enough to set the environment variable. Now reload this file:

    source /etc/environment
  8. Test it by executing:

echo $JAVA_HOME

If it returns the just set path, the environment variable has been set successfully. If it doesn’t, please make sure you followed all steps correctly.

You May Also Like

Helical Insight’s self-service capabilities is one to reckon with. It allows you to simply drag and drop columns, add filters, apply aggregate functions if required, and create reports and dashboards on the fly. For advanced users, the self-service component has ability to add javascript, HTML, HTML5, CSS, CSS3 and AJAX. These customizations allow you to create dynamic reports and dashboards. You can also add new charts inside the self-service component, add new kind of aggregate functions and customize it using our APIs.
Helical Insight’s self-service capabilities is one to reckon with. It allows you to simply drag and drop columns, add filters, apply aggregate functions if required, and create reports and dashboards on the fly. For advanced users, the self-service component has ability to add javascript, HTML, HTML5, CSS, CSS3 and AJAX. These customizations allow you to create dynamic reports and dashboards. You can also add new charts inside the self-service component, add new kind of aggregate functions and customize it using our APIs.
Helical Insight, via simple browser based interface of Canned Reporting module, also allows to create pixel perfect printer friendly document kind of reports also like Invoice, P&L Statement, Balance sheet etc.
Helical Insight, via simple browser based interface of Canned Reporting module, also allows to create pixel perfect printer friendly document kind of reports also like Invoice, P&L Statement, Balance sheet etc.
If you have a product, built on any platform like Dot Net or Java or PHP or Ruby, you can easily embed Helical Insight within it using iFrames or webservices, for quick value add through instant visualization of data.
If you have a product, built on any platform like Dot Net or Java or PHP or Ruby, you can easily embed Helical Insight within it using iFrames or webservices, for quick value add through instant visualization of data.
Being a 100% browser-based BI tool, you can connect with your database and analyse across any location and device. There is no need to download or install heavy memory-consuming developer tools – All you need is a Browser application! We are battle-tested on most of the commonly used browsers.
Being a 100% browser-based BI tool, you can connect with your database and analyse across any location and device. There is no need to download or install heavy memory-consuming developer tools – All you need is a Browser application! We are battle-tested on most of the commonly used browsers.
We have organization level security where the Superadmin can create, delete and modify roles. Dashboards and reports can be added to that organization. This ensures multitenancy.
We have organization level security where the Superadmin can create, delete and modify roles. Dashboards and reports can be added to that organization. This ensures multitenancy.
We have organization level security where the Superadmin can create, delete and modify roles. Dashboards and reports can be added to that organization. This ensures multitenancy.
We have organization level security where the Superadmin can create, delete and modify roles. Dashboards and reports can be added to that organization. This ensures multitenancy.
A first-of-its-kind Open-Source BI framework, Helical Insight is completely API-driven. This allows you to add functionalities, including but not limited to adding a new exporting type, new datasource type, core functionality expansion, new charting in adhoc etc., at any place whenever you wish, using your own in-house developers.
A first-of-its-kind Open-Source BI framework, Helical Insight is completely API-driven. This allows you to add functionalities, including but not limited to adding a new exporting type, new datasource type, core functionality expansion, new charting in adhoc etc., at any place whenever you wish, using your own in-house developers.
It handles huge volumes of data effectively. Caching, Pagination, Load-Balancing and In-Memory not only provides you with amazing experience, but also and does not burden the database server more than required. Further effective use of computing power gives best performance and complex calculations even on the big data even with smaller machines for your personal use. Filtering, Sorting, Cube Analysis, Inter Panel Communication on the dashboards all at lightning speed. Thereby, making best open-source Business Intelligence solution in the market.
It handles huge volumes of data effectively. Caching, Pagination, Load-Balancing and In-Memory not only provides you with amazing experience, but also and does not burden the database server more than required. Further effective use of computing power gives best performance and complex calculations even on the big data even with smaller machines for your personal use. Filtering, Sorting, Cube Analysis, Inter Panel Communication on the dashboards all at lightning speed. Thereby, making best open-source Business Intelligence solution in the market.
With advance NLP algorithm, business users simply ask questions like, “show me sales of last quarter”, “average monthly sales of my products”. Let the application give the power to users without knowledge of query language or underlying data architecture
With advance NLP algorithm, business users simply ask questions like, “show me sales of last quarter”, “average monthly sales of my products”. Let the application give the power to users without knowledge of query language or underlying data architecture
Our application is compatible with almost all databases, be it RDBMS, or columnar database, or even flat files like spreadsheets or csv files. You can even connect to your own custom database via JDBC connection. Further, our database connection can be switched dynamically based on logged in users or its organization or other parameters. So, all your clients can use the same reports and dashboards without worrying about any data security breech.
Our application is compatible with almost all databases, be it RDBMS, or columnar database, or even flat files like spreadsheets or csv files. You can even connect to your own custom database via JDBC connection. Further, our database connection can be switched dynamically based on logged in users or its organization or other parameters. So, all your clients can use the same reports and dashboards without worrying about any data security breech.
Our application can be installed on an in-house server where you have full control of your data and its security. Or on cloud where it is accessible to larger audience without overheads and maintenance of the servers. One solution that works for all.
Our application can be installed on an in-house server where you have full control of your data and its security. Or on cloud where it is accessible to larger audience without overheads and maintenance of the servers. One solution that works for all.
Different companies have different business processes that the existing BI tools do not encompass. Helical Insight permits you to design your own workflows and specify what functional module of BI gets triggered
Different companies have different business processes that the existing BI tools do not encompass. Helical Insight permits you to design your own workflows and specify what functional module of BI gets triggered