Types of thread in Java.

There are 2 types.

User thread,
Daemon thread.

User threads are threads created by the application or user. They are high priority threads. JVM (Java Virtual Machine) will wait (not exit) until all user threads finish their execution. These threads are foreground threads.

Daemon threads are threads mostly created by the JVM. These threads always run in background to perform some background tasks like garbage collection and house-keeping tasks. These threads are less priority threads. JVM will exit as soon as all user threads finish their execution. JVM doesnt wait for daemon threads to finish their task.

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(a) public void incrementI() {

synchronized (this) {
 i = i + 1;
}
}

(b) public synchronized void incrementI() {

 i = i + 1;

}

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final keyword

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Java / Java Multithreading part II

Types of thread in Java.

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