It is used to return the state of the thread. It is used to copy every active thread's thread group and its subgroup into the specified array. It returns an array of stack trace elements representing the stack dump of the thread. It is used to print a stack trace of the current thread to the standard error stream. It returns true if and only if the current thread holds the monitor lock on the specified object. It determines if the currently running thread has permission to modify the thread. It returns the number of active threads in the current thread's thread group. It tests whether the current thread has been interrupted.

It tests whether the thread has been interrupted. It marks the thread as daemon or user thread.

It tests if the thread is a daemon thread. It is used to destroy the thread group and all of its subgroups. It is used to resume the suspended thread. It causes the currently executing thread object to pause and allow other threads to execute temporarily. It returns a reference to the currently executing thread object. It sleeps a thread for the specified amount of time. It is used to start the execution of the thread. Thread class extends Object class and implements Runnable interface. Thread class provides constructors and methods to create and perform operations on a thread. Java provides Thread class to achieve thread programming. Note: At a time one thread is executed only. There can be multiple processes inside the OS, and one process can have multiple threads. There is context-switching between the threads. It uses a shared memory area.ДЄs shown in the above figure, a thread is executed inside the process. If there occurs exception in one thread, it doesn't affect other threads. What is Thread in javaДЄ thread is a lightweight subprocess, the smallest unit of processing. Note: At least one process is required for each thread.

Cost of communication between the thread is low.

Switching from one process to another requires some time for saving and loading registers, memory maps, updating lists, etc.Дў) Thread-based Multitasking (Multithreading).

Cost of communication between the process is high.

In other words, each process allocates a separate memory area.

Each process has an address in memory.

Thread-based Multitasking (Multithreading)ДЎ) Process-based Multitasking (Multiprocessing).

Process-based Multitasking (Multiprocessing).

Multitasking can be achieved in two ways: Multitasking is a process of executing multiple tasks simultaneously. Java Multithreading is mostly used in games, animation, etc.ДЎ) It doesn't block the user because threads are independent and you can perform multiple operations at the same time.Дў) You can perform many operations together, so it saves time.ДЈ) Threads are independent, so it doesn't affect other threads if an exception occurs in a single thread. They don't allocate separate memory area so saves memory, and context-switching between the threads takes less time than process. However, we use multithreading than multiprocessing because threads use a shared memory area. Multiprocessing and multithreading, both are used to achieve multitasking. Multithreading in Java is a process of executing multiple threads simultaneously.ДЄ thread is a lightweight sub-process, the smallest unit of processing.

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