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    Upcasting in Java

    by Lucy

    Typecasting transforms one data type into another, and object typecasting includes upcasting and downcasting. The object can also be typecast in Java, just as datatypes. Additionally, there are two sorts of objects: parent and child objects. Parent to Child and Child to Parent, or Upcasting and Downcasting, are the two types of typecasting that can occur for an object.

  • An open-source app framework called the Spring Framework, or simply Spring, offers infrastructure aid for creating applications in the Java language. Spring is one of the most well-liked and versatile Java Enterprise Edition (Java EE) frameworks. It assists programmers in building fast Java objects-based applications (POJOs).

  • Java

    Spring Bean Lifecycle in Java

    by Lucy

    Any object’s lifecycle describes its birth, how it develops during life, and how it dies. Similarly, the bean life cycle describes the instantiation of the bean. Further, it considers the actions it takes to live and the timing and method of its demise. We’ll talk about the bean’s life cycle in this post.

  • In JavaScript, array reduce is a predefined method for lowering an array to a single value by passing a callback function for each array element. It accepts a process run on all the elements of the supplied array in the left-to-right order. The single value returned is saved in the accumulator.

  • Sorting often refers to arranging an array or collection of components in a specific order, such as ascending or descending order. Bubble Sort is the most straightforward sorting method, which repeatedly switches nearby components if they are in the wrong order. Due to its high average and worst-case time complexity, this approach is inappropriate for huge data sets.

  • If you have a number and wish to find its square root, multiply the number by its component plus itself. In this article, we’ll show you how to use the Java programming language to find the square root of any number. The precise syntax and coding for calculating square roots are covered along with examples since a Math.sqrt() is utilized for this purpose.

  • LinkedList is a linear data structure similar to arrays in Java. LinkedList elements, on the other hand, are not kept in contiguous locations like arrays; instead, they are linked together via pointers. Each LinkedList member has a reference (address/pointer) to the next LinkedList element.

  • Consider a table with a stack of plates. After the first one is placed on the table, the next one is placed on top of it; the third one is placed on top of the second, and so on, until the desired number is reached. To take the dishes off the table one by one, start with the last one placed on top; then move on to the last-but-one; then the one next to the top; and so on.

  • StringBuilder is a Java class that allows you to generate a mutable, or changeable, sequence of characters. The StringBuilder class, like StringBuffer, is an alternative to the Java Strings class, which provides an immutable sequence of characters. However, there is a critical distinction between StringBuffer and StringBuilder: the latter is non-synchronized.

  • The Scanner is a class in java.util package. This class is responsible for reading data from a string, the keyboard, a file, or a network socket. This article focuses solely on reading the keyboard input and displaying the output in a terminal window. Reading data from a file or a network channel is done similarly.

  • With the help of examples, you will learn how to utilize the switch statement in Java to regulate the flow of your program’s execution. The switch statement lets us choose several different ways to run a code block. The switch statement in Java has the following syntax: