Process is a subclass of Object class and it can describe the processes that are started by the exec() method of Runtime class. A Process object controls the process and gets information about it. The Process class is an abstract class, therefore, it cannot be instantiated.

What is difference between thread and process?

A process is a collection of code, memory, data and other resources. A thread is a sequence of code that is executed within the scope of the process. You can (usually) have multiple threads executing concurrently within the same process.

What is the difference between process and thread Java?

A process is a program under execution i.e an active program. A thread is a lightweight process that can be managed independently by a scheduler. Processes require more time for context switching as they are more heavy. Threads require less time for context switching as they are lighter than processes.