I'm trying to install JDK-18 on my windows machine, but the installer gets closed immediately. Previously I had installed Java 8(Update 311) for some reason and its installation file is missing now. What should I do to install JDK-18 freshly and remove Java 8 entirely? If Oracle Database (Release 11 or later) is also installed, a version of SQL Developer is also included and is accessible through the menu system under Oracle.This version of SQL Developer is separate from any SQL Developer kit that you download and unzip on your own, so do not confuse the two, and do not unzip a kit over the SQL Developer files that are included with Oracle Database. Step 2 : Click on Advanced tab. Step 3: Click on Environment Variables. Step 4: Create a new class path for JAVA_HOME. Step 5: Enter the Variable name as JAVA_HOME and the value to your jdk bin path ie c:\Programfiles\Java\jdk-1.6\bin and. NOTE Make sure u start with .; in the Value so that it doesn't corrupt the other environment variables The Java Platform, Standard Edition 7 Development Kit (JDK 7) is a feature release of the Java platform. It contains new features and enhancements in many functional areas. See the developer's website to obtain more information about enhancements, changes, and fixed bugs. Java EE at a Glance. Java Platform, Enterprise Edition (Java EE) is the standard in community-driven enterprise software. Java EE is developed using the Java Community Process, with contributions from industry experts, commercial and open source organizations, Java User Groups, and countless individuals. Each release integrates new features Note: On Windows 7 click on the Windows button. Click on the "Edit system environment variables" shortcut. Wait for the environment variables window to open. Click on "New…". Enter "JAVA_HOME" as variable name. Enter the [JAVA_INSTALL_DIR] as variable value. In this tutorial, the Java installation directory is C:\jdk-11.0.1. Click OK. As we are installing the latest Java version, you can find it at the top of the Oracle Java download page. Click on the Download button right below JDK. Here is the direct link to download the jdk 10.0.1 installer for Windows 64 bit. Accept the License Agreement and pick the correct download for your operating system. In this example, we will Dead simple to install JDK 8, 11 or 15. But, after the installation when I tried checking the version using command java -version it's showing like regular JDK. This is because JAVA_HOME is pointing to your old JDK. You need to go to Control Panel and change the Environment Variables. Just do a search on Windows 10 for "Environment Variables When we click on the link, shown above, we land on Java SE Development Kit 14 Download page that shows the JDK download link for the different operating systems. Step 3: Click on the JDK download link according to your operating system. In our case, we are using Windows operating system, so we are clicking on the jdk-14.0.1_windows-x64_bin.exe How to Install. To install the Java Development Kit (JDK), follow these steps: Step 1: Visit the Oracle JDK download page. Go to the official Oracle website's Java SE Downloads page. Step 2: Accept the License Agreement. Read and accept the Oracle Technology Network License Agreement for Oracle Java SE. pKrK4n.