_thread.start_new_thread example

Example 1: start thread java

package com.tutorialspoint;

import java.lang.*;

public class ThreadDemo implements Runnable {

   Thread t;
   ThreadDemo() {
    
      // thread created
      t = new Thread(this, "Admin Thread");
     
      // prints thread created
      System.out.println("thread  = " + t);
      
      // this will call run() function
      System.out.println("Calling run() function... ");
      t.start();
   }

   public void run() {
      System.out.println("Inside run()function");
   }

   public static void main(String args[]) {
      new ThreadDemo();
   }
}

Example 2: Python3 - Multi Threaded Programming

#!/usr/bin/python3

import queue
import threading
import time

exitFlag = 0

class myThread (threading.Thread):
   def __init__(self, threadID, name, q):
      threading.Thread.__init__(self)
      self.threadID = threadID
      self.name = name
      self.q = q
   def run(self):
      print ("Starting " + self.name)
      process_data(self.name, self.q)
      print ("Exiting " + self.name)

def process_data(threadName, q):
   while not exitFlag:
      queueLock.acquire()
      if not workQueue.empty():
         data = q.get()
         queueLock.release()
         print ("%s processing %s" % (threadName, data))
      else:
         queueLock.release()
         time.sleep(1)

threadList = ["Thread-1", "Thread-2", "Thread-3"]
nameList = ["One", "Two", "Three", "Four", "Five"]
queueLock = threading.Lock()
workQueue = queue.Queue(10)
threads = []
threadID = 1

# Create new threads
for tName in threadList:
   thread = myThread(threadID, tName, workQueue)
   thread.start()
   threads.append(thread)
   threadID += 1

# Fill the queue
queueLock.acquire()
for word in nameList:
   workQueue.put(word)
queueLock.release()

# Wait for queue to empty
while not workQueue.empty():
   pass

# Notify threads it's time to exit
exitFlag = 1

# Wait for all threads to complete
for t in threads:
   t.join()
print ("Exiting Main Thread")

Example 3: multithread python3

import timeimport threadingdef calc_square(number):   print("Calculate square numbers: ")   for i in numbers:      time.sleep(0.2)   #artificial time-delay      print('square: ', str(n*n))def calc_cude(number):   print("Calculate cude numbers: ")   for i in numbers:      time.sleep(0.2)      print('cube: ', str(n*n*n))arr = [2,3,8,9]t = time.time()t1 = threading.Thread(target = cal_square,args=(arr,))t2 = threading.Thread(target = cal_cube,args=(arr,))# creating two threads here t1 & t2t1.start()t2.start()# starting threads here parallelly by usign start function.t1.join()# this join() will wait until the cal_square() function is finised.t2.join()# this join() will wait unit the cal_cube() function is finised.print("Successed!")