Java is a versatile, machine-independent programming language that is used to write a variety of different applications. Unlike most other applications, you can run java applications equally well in Windows, Mac, or Linux, provided you have installed Java Virtual Machine (JVM) in your system. However, if JVM breaks, then none of your java applications run.
One recent impact having a broken JVM launcher was felt by users of Minecraft. A recent update brought new features, but also required Java 16 to set up a server. Those with older version of JVM were greeted with a Java Native Interface (JNI) error.
There are other examples where a malfunctioning JVM launcher caused an application to not work, and it could probably happen again in the future. We have this article prepared, so thatyoucan be prepared when your JVM launcher has an error.
What Causes Java Virtual Machine Launcher Errors
Fixing Java Virtual Machine Error in Windows
You can somewhat diagnose what is wrong with your JVM and attempt a corresponding fix based upon the type of error message that you see when you JVM does not work.
Reinstall/Update Java
If the error message you see is “Java Virtual Machine Launcher Could Not Find The Main Class,” then Java has been incorrectly installed or Java installation has been corrupted in your machine.
Windows 11
Increase System Memory for Java
You will get a “Could not create the Java virtual machine” error if Java is trying touse more memorythan has been assigned to it.
You can fix this by increasing the amount of memory allotted to Java.
Run as Administrator
Sometimes JVM errors can occur because you do not havesufficient user privilegeto run the application.
You can fix this by configuring Java to run as administrator.
Set File Type Association to Java
If your error message is “Unable to access Jar file,” then one of the reasons for this issue is that your jar file association is not set to Java.
Frequently Asked Questions
What is Java Exception Error?
And exception is an unexpected event which occurs during program execution. Java has methods to catch and handle exceptions.
An application that has implemented exception handling methods will create an exception object when it runs into an exception during execution.
The object contains information such as name and description of the exception, as well as the state of the application when the exception was caught.
What is the Maximum Java Heap Size for Windows?
The maximum allowable heap size for Java in Windows is 16 EB (exabyte). For 32 bit of Windows, maximum heap size is 4 GB.
How Do I Install Java on Mac?
Please follow the steps below if you want to install Java on your MacOS:
Please note that you need a macbook with Intel processor to install Java. Oracle does not officially support Java on M1/M2 processors yet.
