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Articles by Shriansh Kumar
Page 16 of 22
Difference Between URL, URI and URN in Java
The modern Internet is all about the World Wide Web which holds billions of websites and resources. There are several ways to access those web-based resources by following the protocols. Java has the concept of networking that is used to establish communication between clients and those resources. But, to locate a specific resource among the millions available, we need a unique identifier. There are three components: URI, URL and URN that helps us locate a certain resource on the web. Together they serve a single purpose, but through this article, we will discuss the difference between URI, URL and URN. ...
Read MoreDifference Between JavaEE and Spring
The debate about JavaEE and Spring is very common among Java developers. Both technologies emerged as popular frameworks for building enterprise applications using Java. Java EE is a more adaptable and distributed framework for developing big software. Spring, on the other hand, is open source and makes use of the POJO programming model to develop any type of Java application. Let’s find out more detailed differences between JavaEE and Spring through this article. JavaEE vs Spring JavaEE Java Platform Enterprise Edition, in short JavaEE is a set of specifications defined by Oracle. It is also known as J2EE. It aims ...
Read MoreHow Objects Can an ArrayList Hold in Java?
ArrayList is a class of Java Collection Framework that implements List Interface. It is a linear structure that stores and accesses each object in a sequential manner. It allows the storage of duplicate values. Always remember, each class of the collection framework can hold instances of wrapper classes or custom objects. They do not work with primitives. This article aims to explain how those objects hold by an ArrayList in Java. How ArrayList holds Objects ArrayList internally uses an array to store its elements. However, the size of the array is not fixed, it can increase and decrease as per ...
Read MoreDifferent Ways to Achieve Pass By Reference in Java
The most frequent query asked by beginner programmers, especially those who have already worked with C and C++ in the past, is whether Java supports pass-by-referenceor pass-by-value. Generally, programming languages use pass-by-value and pass-byreferencefor passing parameters to a method. However, Java does not support both approaches rather it uses pass-by-value to pass both primitive and reference type values. But, it provides a few ways to achieve pass-by-reference, we will explore those through this article. Ways to Achieve Paas By Reference Let’s start this discussion by understanding the storage mechanism of Java. The reference variables, names of methods and classes are ...
Read MoreHow Java filter() Method Works in Background?
The Java filter() method allows us to strain elements of the stream based on the specified condition. It is a part of higher-order function that is used to apply a certain behavior on stream items. This method takes a predicate as an argument and returns a list of elements that match the predicate. But the question arises here is that how this filter() method works in the background. This article aims to explain this question through some example programs. Working of filter() method in Background Before going deep into the filter() method, let’s familiarize ourselves with I/O Streams. Itis an ...
Read MoreHeap and Stack Memory Errors in Java
In Java, every interface, class, object, variable and method of a running program is stored in distinct reasons of computer memory. The heap is the part of memory area where values of variables, methods and classes are stored at runtime. Its allocation happens dynamically and can grow or shrink depending on the application's needs. On the other hand, the reference variables, names of methods and classes are stored in the stack memory area. However, if for some reason their allocation is not handled properly then, it may lead to memory errors that we are going to discuss in this article. ...
Read MoreHow does Java process the backspace terminal control character?
The backspace terminal control character is a special character represented by the ‘\b’notation. It is used to move the cursor one character back. It comes under Java escape characters, these characters are used with backslash (\) and hold a special meaning to the compiler. In this article, we will understand and see the practical implementation of‘\b’ notation through Java example programs. Working of Backspace Terminal Control Character Two types of situations may arise while working with this escape character. First, when we hard code the backspace character into a String and the second, when we take input using a keyboard. ...
Read MoreDifferent Ways to Copy Files in Java
Java provides different ways to copy files including the ‘File’, ‘FileInputStream’ and‘FileOutputStream’ classes. There are times when we need to take a backup, compress a file or share it with others. In these situations, copying that file becomes necessary. Weare going to explore the methods and classes that will help us to copy the content of one file to another file through Java programs. Before jumping to the example program directly, let’s discuss some classes and built-in methods that we will be using. This will build a foundation for understanding the code. Note that these classes and methods are associated ...
Read MoreHow are parameters passed in Java?
The most frequent query asked by beginner programmers is that how are parameters passed in Java. Generally, the programming languages use pass by value and pass byreference for passing parameters to a method. However, Java does not support both approaches rather it uses pass by value to pass both primitive and reference type values. In this article, we are going to understand passing parameters by value through exampleprograms. Passing Parameters to a Method in Java Let’s start this discussion by understanding the storage mechanism of Java. The referencevariables, names of methods and classes are stored in stack and their values ...
Read MoreDifferent Ways to Print First K Characters of the String in Java
A string is a class in Java that stores a series of characters enclosed within double quotes.Those characters are actually String-type objects. The string class is available in the‘java.lang’ package. Suppose we have given a string and a positive integer ‘k’. Now, thejob is to print that string's first 'k' characters in Java. Also, check whether the length ofgiven string is less than or not, if so print the original string. Java Program to Print First K Characters of the String Let’s understand the given problem with a few examples − Instance String st1 = “TutorialsPoint”; String st2 = “Tutorial”; ...
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