java threading example

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sure! java provides built-in support for multithreading, which allows concurrent execution of two or more threads. this can improve the performance of applications, especially those that are i/o-bound or cpu-bound.

what is a thread?

a thread in java is a lightweight process. it is a separate path of execution within a program. the java virtual machine (jvm) allows multiple threads to run concurrently, which can significantly improve the performance of applications.

creating a thread

there are two main ways to create a thread in java:

1. *by extending the `thread` class*
2. *by implementing the `runnable` interface*

example 1: extending the thread class

in this example, we will create a simple program where we extend the `thread` class.



explanation of example 1

1. **mythread class**: we create a class `mythread` that extends the `thread` class. we override the `run()` method, where the code that should run in the thread is defined.
2. **thread.sleep()**: this method pauses the execution of the current thread for a specified time (in milliseconds).
3. **starting threads**: in the `main` method, we instantiate two threads and start them using the `start()` method.

example 2: implementing the runnable interface

now, let's create a thread by implementing the `runnable` interface.



explanation of example 2

1. **myrunnable class**: we create a class `myrunnable` that implements the `runnable` interface and override the `run()` method.
2. **creating threads**: in the `main` method, we create two `thread` objects, passing an instance of `myrunnable` to their constructors.
3. **starting threads**: we start both threads using the `start()` method.

thread states

in java, a thread can be in one of several states:

**new**: a thread that has been created but not yet started.
**runnable**: a thread that is ready to run and waiting for cpu time.
**blocked**: a thread that is blocked waiting for a monitor lock.
**waiting**: a ...

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