Java AdvancedLesson 79Free preview

Java Threads

This lesson is part of Java · All levels

Summary

Thread allows one program to perform multiple tasks simultaneously in one process. In Java, there are two main ways to create threads: inherit a thread class or implement a run-able interface. Multithreading speeds up heavy duty, but requires synchronization to avoid race condition.

Key points

Start() running run() on the new thread; calling run() immediately stays on the caller thread
Runnable is more recommended because classes can still inherit other classes
Delay the thread for milliseconds, waiting for the other thread to finish
Synchronized prevents two threads from executing critical blocks at the same time
ExecutorService is more efficient at managing many tasks than making manual threads

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