feat: demonstrate thread priorities with run, sleep, and start

WHAT the code does:
- Defines ThreadMethod extending Thread, with a constructor to set thread name.
- Overrides run():
  - Loops from 1 to 5.
  - Prints thread name, its priority, and loop counter.
  - Sleeps for 100ms between iterations.
- In main():
  - Creates three threads with custom names.
  - Sets different priorities: MIN, NORM, MAX.
  - Starts all three threads.

WHY this matters:
- Demonstrates key Thread API methods: start(), run(), sleep(), setPriority().
- Shows how thread priority hints the scheduler about execution order (though not guaranteed).
- Highlights concurrent execution and output interleaving.

HOW it works:
1. Three ThreadMethod objects created with names.
2. Priorities assigned:
   - l → normal priority.
   - m → minimum priority.
   - h → maximum priority.
3. start() called for each → JVM invokes run() in separate threads.
4. Each thread:
   - Prints status (name, priority, iteration).
   - Sleeps briefly to yield CPU, increasing chance of interleaving output.

Key points:
- start() creates new thread of execution.
- run() contains the task logic.
- sleep() pauses current thread without releasing lock.
- setPriority() influences scheduling but does not guarantee order.

Short key: java-threads priorities run-sleep-start demo.

Signed-off-by: https://github.com/Someshdiwan <[email protected]>

Author: Someshdiwan

Section19MultiThreading/MT/src/ThreadMethod.java

@@ -1,14 +1,10 @@
-public class ThreadMethod extends Thread
-{
-
-    public ThreadMethod(String name)
-    {
+public class ThreadMethod extends Thread {
+    public ThreadMethod(String name) {
         super(name);
     }
-        // Thread class ka overridden method. Thread class Methods.
-        public void run () {
-            for (int i = 1; i <= 5; i++)
-            {
+    // Thread class ka overridden method. Thread class Methods.
+    public void run () {
+        for (int i = 1; i <= 5; i++) {
                /* {
                     String a = "";
                     for (int j = 0; j < 10000; j++)
@@ -17,29 +13,28 @@ public void run () {
                     }
                 }*/
 
-                System.out.println(Thread.currentThread().getName() + " - Priority: " + Thread.currentThread().getPriority() + "- count: " + i);
-                try
-                {
-                    Thread.sleep(100);
-                }
-                catch(Exception e)
-                {
+            System.out.println(Thread.currentThread().getName() + " - Priority: " + Thread.currentThread().getPriority() + "- count: " + i);
+            try {
+                Thread.sleep(100);
+            }
+            catch(Exception e) {
 
                 }
             }
         }
-        public static void main(String[] args) throws InterruptedException
-        {
+        public static void main(String[] args) throws InterruptedException {
             ThreadMethod l = new ThreadMethod("Somesh");
             ThreadMethod m = new ThreadMethod("Diwan"); //Setting Thread Priority
             ThreadMethod h = new ThreadMethod("Unstoppable");
+
             l.setPriority(Thread.NORM_PRIORITY);
             m.setPriority(Thread.MIN_PRIORITY);
             h.setPriority(Thread.MAX_PRIORITY);
+
             l.start();
             m.start();
             h.start();
             //t1.start();
         }
 }
-// Start run sleep join setPriority
+// Start run sleep join setPriority