Some useful tips related to:
- health & fitness
- vehicle care
- cooking
- misc household tasks
What is a thread?
When an Operating System needs to execute a program, it creates a process for it. Each process has at least one thread running within it.
A thread is a path of code execution through a program. Each thread may have its own local variables etc.
When we execute a java class, typically two threads are running within JVM. The "main" thread which begins with executing main() method; and Garbage Collector, which is always executing in JVM.
States of a thread!
During its life, a thread moves through various states. These possible states are: new, ready, running, waiting and dead.
New - A thread is in new state immediately after it is created.
Ready - After new state, a thread transitions to Ready state immediately after it is started.
Running - A thread moves to Running state when JVM selects it for execution.
Dead - A thread enters Dead state after its execution has completed. A dead thread can not be restarted again.
Wait - If a thread decides to sleep, it enters Wait state.