The Java Runtime Environment (JRE) is a critical component of Java. JRE allows you to run Java applications on your computer. If JRE is missing, you will not be able to run Java applications.
The registry is a critical part of Windows. It stores information about all the software on your computer. When you try to run a Java application, Windows looks in the registry to see if JRE is installed. If JRE is not listed in the registry, Windows will not be able to find it and you will get an error message.
There are two ways to fix this problem:
1. Install JRE.
2. Edit the registry to point to the location of JRE.
Option 1 is the easiest solution. Simply download and install JRE from http://www.oracle.com/technetwork/java/javase/downloads/index.html.
Option 2 is a little more complicated, but it is still relatively easy to do. You will need to use the Registry Editor to edit the registry. To do this, follow these steps:
1. Press the Windows key + R to open the Run dialog.
2. Type ‘regedit’ and press Enter.
3. Navigate to ‘HKEY_LOCAL_MACHINE\SOFTWARE\JavaSoft\Java Runtime Environment’.
4. Double-click on the ‘CurrentVersion’ key and change the value to the correct version of JRE (for example, 1.8.0_73).
5. Double-click on the ‘RuntimeLib’ key and change the value to the location of the JRE installation (for example, C:\Program Files\Java\jre1.8.0_73\bin\client\jvm.dll).
6. Close the Registry Editor and try running the Java application again.
This should fix the problem. If you are still having trouble, you may need to reinstall Java.
Fix: The registry refers to a nonexistent Java Runtime Environment
The Solution: How to fix the registry so it points to the right JRE
If your registry is pointing to a nonexistent Java Runtime Environment, you can fix it by editing the registry key. The registry key is located at:
HKEY_LOCAL_MACHINE\SOFTWARE\JavaSoft\Java Runtime Environment
In the “Java Runtime Environment” key, you will see a “CurrentVersion” key. Edit the “CurrentVersion” key and change the value to the correct version of the JRE.
The Cause: Why the registry might refer to a nonexistent JRE
There can be a few reasons why the registry might refer to a nonexistent JRE. One possibility is that an older version of Java was installed on the computer, and then later uninstalled. However, the registry entries for the older version of Java were not removed, so the registry still thinks that Java is installed, even though it is not. Another possibility is that a JRE was manually installed in an alternate location, but the registry was not updated to reflect the new location. In either case, the result is the same: the registry refers to a JRE that does not actually exist, and this can cause problems when trying to use Java-based applications.
There are a few different ways to fix this issue. One option is to manually edit the registry to remove references to the nonexistent JRE. This can be a bit tricky, and it is important to be careful when editing the registry, as making a mistake can cause serious problems. Another option is to use a utility that will automatically fix the problem for you. This can be a safer and easier option, and is often the best choice for most users.
The Results: What to expect after fixing the registry
After fixing the registry, you should expect the Java Runtime Environment to be properly installed on your system. This will allow you to run Java applications without any errors.
The Bottom Line: Why it’s important to keep the registry up-to-date
The registry is a set of files that Windows uses to store information about the configuration of the system, and it is important to keep it up-to-date in order to avoid problems with compatibility and stability. One of the most important pieces of information that the registry contains is the location of the various Java Runtime Environments (JREs) that are installed on the system. If the registry refers to a JRE that no longer exists, then this can cause problems.
Fortunately, it is relatively easy to fix this issue by simply updating the registry to point to the correct location of the JRE. This can be done manually or by using a tool such as Registry Fixer.