Java - Properties of the Thread Class

Learn: What do you understand by Thread Priority in java? Explain in brief Thread Priorities in java. By Preeti Jain Last updated : March 23, 2024

Properties of the Thread Class

Thread Priorities determines how a thread should be treated with respect to others.
Several threads executes concurrently. Every thread has some priority.
Which thread will get a chance first to execute it is decided by thread scheduler based on thread priority.
The valid range of thread priority is 1 to 10 (i.e. 1,2,3,4.....10.) and 1 is the min priority and 10 is the max priority.
We can also represent thread priority in terms of constants. Basically, we have three types of constants like MIN_PRIORITY, MAX_PRIORITY, NORM_PRIORITY.

Syntax

Thread.MIN_PRIORITY
Thread.NORM_PRIORITY
Thread.MAX_PRIORITY

Every thread has some priority and it can be defined by JVM or user (i.e. if not defined by the user then JVM will set default priority).
Thread having high priority will get a chance first to execute and threads having same priority then we can't expect exact execution order any thread can get a chance.

Setting Properties of Thread Class

To set a property, the setPriority() method is used.

Example

class SetPriority {
  public static void main(String[] args) {
    System.out.println("Before setting Priority of Main thread is " +
      Thread.currentThread().getPriority());
    
    Thread.currentThread().setPriority(6);
    
    System.out.println(" After setting Priority of Main thread is " +
      Thread.currentThread().getPriority());
  }
}

Output

D:\Java Articles>java SetPriority
Before setting Priority of Main thread is 5
After setting Priority of Main thread is 6

Getting Properties of Thread Class

To set a property, the getPriority() method is used.

Example

class GetPriority {
  public static void main(String[] args) {
    System.out.println("Priority of Main thread is " +
      Thread.currentThread().getPriority());
  }
}

Output

D:\Java Articles>java GetPriority
Priority of Main thread is 5

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