Found 9326 Articles for Object Oriented Programming

Introduction Optical Character Recognition (OCR) plays an instrumental role in digitizing printed text, allowing it to be edited, searched, and stored more compactly. One of the most powerful OCR tools available is Tesseract OCR. This article will explore how to use Tesseract OCR with Java, providing detailed examples to enhance your understanding. What is Tesseract OCR? Tesseract OCR is an open-source OCR engine sponsored by Google that can recognize more than 100 languages out of the box. It's widely regarded for its accuracy and adaptability, making it a popular choice for developers across various applications. Integrating Tesseract OCR with Java ... Read More

Introduction Core Java (J2SE) and Advanced Java are the two components that make up the Java programming language (JEE). The foundations of the Java programming language, including its data types, functions, operators, loops, threads, and exception handling, are discussed in the "core Java" section of this book. It is used in the process of developing apps for widespread usage. Whereas Intermediate Java focuses on more advanced topics, such as database connection, networking, Servlet, web services, and so on, Advanced Java addresses more fundamental ideas. In this article, we will talk about what advanced Java is, and the concepts of advanced ... Read More

Solving interesting pattern problems enhances the understanding of loops. They are essential because they help in building a strong foundation of a particular programming language. There are various kinds of patterns including number-based, star-based and alphabetical patterns as well. This article will guide you to solve a hut star pattern using nested for loop in Java. Java Program to print Hut Star Pattern Since we are going to solve the problem using nested for loop therefore, it is necessary to discuss its syntax. Syntax for ( initial expression; conditional expression; increment/decrement expression ){ for ( ... Read More

Java has various levels of protection that allow precise control over the accessibility of member variables and methods within classes, subclasses, and packages. The access control mechanism works with the help of access modifiers such as public, protected, private and package. They define scope of a variable, class and method. We are going to understand the various access modifiers in Java. Access Modifiers in Java Public Access Modifier Java does not restrict the accessibility of public members. Anything declared public can be accessible everywhere means we can access them within the class as well as outside the class and ... Read More

The protected and package access modifiers determine how a member of a class or method can be accessed. The modifiers are attached to the members at the time of declaration. We know that these access modifiers play a major role in Java oops concepts like encapsulation, polymorphism and inheritance. It helps in preventing misuse of functionalities provided by a member. We will try to understand protected and package access modifiers in Java through example programs. Access Modifiers in Java Protected Access Modifier It is mostly used in the case of inheritance to control the access of parent class members ... Read More

The protected and final access modifiers determine how a member of a class or method can be accessed. The modifiers are attached to the members at the time of declaration. We know that these access modifiers play a major role in Java oops concepts like encapsulation and inheritance. It helps in preventing misuse of functionalities provided by a member. We will try to understand protected and final access modifiers in Java through example programs. Access Modifiers in Java Protected Access Modifier It is mostly used in the case of inheritance to control the access of parent class members and ... Read More

JSP stands for Java Server Pages and is used for the purpose of developing web based applications. A single JSP page consists of HTML tags for static content and JSP tags to construct dynamic content. The JSP tags start with ‘’. We save our JSP file with the extension ‘.jsp’. Validating a user means simply checking whether the user has entered correct login details or not. The validation process in JSP is quite simple and straightforward. This article will guide you to create a program to validate a user using JSP. Steps to create a Program to Validate a ... Read More

ReetrantLock is a class that implements Lock Interface. It provides the synchronization feature with great flexibility which is why it is the most used lock class in Java. It is necessary for the reliable and fair working of thread. Here, threads are small sub-processes of a big operation. In this article, we are going to learn ReetrantLock and how they manage threads so that they can work efficiently. Working of ReetrantLock When multiple threads try to access a shared resource then, ReetrantLock restricts access to a single thread at a time through ‘lock()’ and ‘unlock()’ methods. Suppose there are ... Read More

List is the sub-interface of Java Collection Interface. It is a linear structure that stores and accesses each element in a sequential manner. To use the features of list, we use ArrayList and LinekdList class that implements the list interface. In this article, we will create an ArrayList and try to select items from that list randomly. Program to Randomly select items from a List in Java Random Class We create an object of this class to generate pseudorandom numbers. We will customize this object and apply our own logic to select any random items from the list. ... Read More

Complex numbers are expressed as the sum of a real number and an imaginary number. Its general form is ‘a + ib’ where a and b represent real numbers and ‘i’ an imaginary number. For example, 5.4 + 2.6i here, 5.4 is the real part and 2.6i is the imaginary part. The various application of complex number includes quantum mechanics, signal processing and so forth. In this article, we will create a Java program to add and subtract complex numbers using class. Although it supports almost all the basic mathematical operations. Program to Add and Subtract Complex Numbers using ... Read More