// Declares String reference variable str1 and str2 String str1; String str2; // Assigns the reference of a String object "Hello" to str1 str1 = new String( "Hello World !!" ); // Assigns the reference stored in str1 to str2 str2 = str1; System.out.println( str1 ); //Hel...
AThreadis a lightweight process that allows a program to operate more efficiently by running multiple threads in parallel. In this Java concurrency tutorial, we will learn to create and execute threads in different ways and their usecases. 1. Creating a NewThread In Java, we can create aThre...
In this code, we are using Python’scollectionsmodule to work with a data structure called a deque, which is short for a double-ended queue. We create a deque calleddataand initialize it with a sequence of integers from1to10. Deques are versatile data structures that allow efficient access...
In JDBC, we may get exceptions when we execute or create the query. Exceptions that occur due to the Database or Driver come under SQL Exception. Using Exception handling, we can handle the SQL Exception like we handle the normal exception. SQLException is available in the java.sql package....
Learn to use Java ThreadPoolExecutor in combination with BlockingQueue. 1. Creating ThreadPoolExecutor A ThreadPoolExecutor is a type of ExecutorService that executes each submitted task using one of the threads from a thread pool. This class provides many flexible ways to create a pool of ...
This example demonstrates about How to use LinkedBlockingDeque in android Step 1 − Create a new project in Android Studio, go to File ⇒ New Project and fill all required details to create a new project. Step 2 − Add the following code to res/layout/activity_main.xml. <?xml versi...
Java Copy public static String createQueue(String connectStr) { try { // Create a unique name for the queue String queueName = "queue-" + java.util.UUID.randomUUID(); System.out.println("Creating queue: " + queueName); // Instantiate a QueueClient which will be // used to creat...
to do their job. It is very rare that we have control over the OS and the context switching policy. So chances are, at a high load, this single deque thread doesn’t run enough to deque all the jobs and allocate enough worker threads, creating a performance bottleneck. So, in ...
Initialize Log4j in Java Code: The Java code remains the same. Log4j will use the updated configuration to log messages to both the console and the file: importorg.apache.logging.log4j.LogManager;importorg.apache.logging.log4j.Logger;publicclassMyApp{privatestaticfinalLoggerlogger =LogManager.getLogge...
This C++ Sleep tutorial will discuss the Sleep Function in C++ & see how to put a thread to sleep. We will also learn about the other functions viz. usleep.