Java Tutorial Java Virtual Machine

Reference

1. Create Phantom Reference in Java
2. Create WeakReference in Java
3. Create a soft reference in Java
4. Create a user-defined property or change the value of the current property in Java
5. Test PhantomReference in Java
6. Test WeakReference in Java
7. Test soft reference in Java

Version

1. Find out the version of the Java Virtual Machine in Java
2. Get Java Runtime Environment (JRE) version in Java
3. Get Java specification version using System class in Java
4. Provide common access to specifics about the version of Java that a virtual machine supports in Java

Properties

1. Get the Default System Properties in Java
2. Return a default value if the specified property does not exist in Java
3. Return all system properties in Java
4. Set System Properties in Java
5. Set a system property in Java
6. Set the Value of a System Property from the Command Line in Java
7. Using System.getProperty(String key) to retrieve system properties in Java

Memory

1. Get the amount of free memory in the Java Virtual Machine in Java
2. Get the maximum amount of memory in JVM in Java
3. Get the total amount of memory in the Java virtual machine in Java

Command

1. Terminate the running program and the current JVM in Java