Basics of threads

Basics of threads

In Java, a thread is a lightweight sub-process that allows a program to perform multiple tasks simultaneously. A single Java program can have multiple threads running concurrently, and each thread can perform different tasks at the same time. Threads are independent, and they execute concurrently, which means that they can access shared data and communicate with each other to coordinate their work.

In Java, threads are implemented by the java.lang.Thread class. To create a new thread, you can either extend the Thread class or implement the java.lang.Runnable interface. The Thread class provides several methods to control the behavior of a thread, such as starting, pausing, resuming, and stopping it.

Java provides two types of threads: user threads and daemon threads. User threads are created explicitly by the user and run in the background, while daemon threads are created by the Java Virtual Machine (JVM) to perform tasks such as garbage collection or finalization. Threads are important in Java programming because they allow you to write more efficient and responsive programs that can handle multiple tasks simultaneously. For example, in a GUI application, you can use a separate thread to perform time-consuming tasks such as network operations or file I/O without blocking the user interface. This makes the application more responsive and improves the user experience.

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