Found 9326 Articles for Object Oriented Programming

The addAll(int index, Collection

The addAll(Collection

The isAlive() method of the Thread class returns true if the thread is alive, which is anytime after the thread has been started but before it runs to completion.Exampleclass first implements Runnable {    public void run() {       try {          for(int i=0; i

We can use a private contractor in a Java while creating a singleton class. The Singleton's purpose is to control object creation, limiting the number of objects to only one. Since there is only one Singleton instance, any instance fields of a Singleton will occur only once per class, just like static fields. Singletons often control access to resources, such as database connections or sockets.ExampleThe easiest implementation consists of a private constructor and a field to hold its result, and a static accessor method with a name like getInstance().The private field can be assigned from within a static initializer block ... Read More

When a new thread begins its life cycle in the new state. It remains in this state until the program starts the thread. It is also referred to as a born thread.After this newly born thread is started, the thread becomes runnable. A thread in this state is considered to be executing its task.

While creating a thread class we must override the run() method of the Thread class. This method provides an entry point for the thread and you will put your complete business logic inside this method.Exampleclass ThreadDemo extends Thread {    private String threadName;    ThreadDemo( String name) {       threadName = name;       System.out.println("Creating " +        threadName );    }    public void run() {       System.out.println("Running " +          threadName );       try {          for(int i = 4; i ... Read More

The java.lang.Thread class is a thread of execution in a program. The Java Virtual Machine allows an application to have multiple threads of execution running concurrently. Following are the important points about Thread −Every thread has a priority. Threads with higher priority are executed in preference to threads with lower priority.Each thread may or may not also be marked as a daemon.There are two ways to create a new thread of execution.One is to declare a class to be a subclass of Thread.Another way to create a thread is to declare a class that implements the Runnable interface. Read More

The ability to run multiple programs or parts of programs (threads) in parallel is known as concurrency.A multi-threaded program contains two or more parts that can run concurrently and each part can handle a different task at the same time making optimal use of the available resources especially when your computer has multiple CPUs. Multi-threading enables you to write in a way where multiple activities can proceed concurrently in the same program.

A thread goes through various stages in its lifecycle. For example, a thread is born, started, runs, and then dies. New − A new thread begins its life cycle in the new state. It remains in this state until the program starts the thread. It is also referred to as a born thread. Runnable − After a newly born thread is started, the thread becomes runnable. A thread in this state is considered to be executing its task. Waiting − Sometimes, a thread transitions to the waiting state while the thread waits for another thread to perform a task. ... Read More

Maven is a powerful open-source project management tool developed by the Apache Group to build and manage any Java-based project. Additionally, this tool makes Java developers' work easier while developing reports, checking the builds, and testing automation setups. As we stated above, Maven is primarily used to build and manage many Java-based projects, Java eclipse project is the integrated development environment (IDE) that often hits to mind. Hence, by reading this article, you will learn everything about Maven automatic build tool and what it means in Java Eclipse Projects. Understanding Maven Maven is a popular automatic build tool that focuses ... Read More