In Java, threads are used to perform tasks concurrently. Thread priority is an integer value that determines the importance of a thread relative to others. Threads with higher priority are generally scheduled before threads with lower priority. Java provides a method `setPriority(int priority)` to set the priority of a thread, where the priority values range from `Thread.MIN_PRIORITY (1)` to `Thread.MAX_PRIORITY (10)`, with `Thread.NORM_PRIORITY (5)` as the default. Inter-thread communication in Java allows threads to communicate with each other using methods like `wait()`, `notify()`, and `notifyAll()`. These methods are part of the `Object` class, and they facilitate synchronization between threads. Threads can wait for a condition to be met using `wait()`, and notify other threads to continue execution using `notify()` or `notifyAll()`. Let's write a Java program to demonstrate both thread priority and inter-thread communication: ```java class ThreadExample extends Thread { private final int threadNumber; ThreadExample(int threadNumber) { this.threadNumber = threadNumber; } @Override public void run() { for (int i = 0; i < 5; i++) { try { System.out.println("Thread " + threadNumber + " running with priority " + getPriority()); Thread.sleep(1000); // Simulate work by sleeping for 1 second } catch (InterruptedException e)