For loops are an important part of Java programming and are used to execute a block of code repeatedly. They are especially useful when working with arrays or collections, allowing you to easily access and manipulate each element in the array or collection. In this tutorial, you will learn about the syntax of a for…
Read More Java For Loops: A Comprehensive Guideswitch (expression) { case constant: // switch block 1… break; case constant: // switch block 2… break; default: // default switch block … ; } class Test { public static void main(String[] args) { String color = “blue”; switch (color) { case “white”: // if it is white, execute this block of code System.out.println(“The color…
Read More Java switch Statementclass Test { public static void main(String[] args) { int a = 10; int b = 5; if (a > b) { // if true, enter the if code block System.out.println(“a is greater than b”); } System.out.println(“Rest of the code …”); } } Output: a is greater than b Rest of the code … …
Read More Java if-else Statementclass Test { public static void main(String[] args) { String str = “ALEGRUTECHBLOG”; String strInLowerCase = str.toLowerCase(); System.out.println(strInLowerCase); } } Output: alegrutechblog toUpperCase() Converts all of the characters in this String to the upper case using the rules of the default locale. class Test { public static void main(String[] args) { String str…
Read More Working With Strings in Java – Part 2In Swift, you can load HTML files into your WKWebView from a file that is part of your App Bundle. Before you use the below code snippet, please make sure that the HTML file you want to display in WKWebView is added to your project. Load Local HTML File to a WKWebView let myUrl = myProjectBundle.url(forResource: “my-html-file”,…
Read More WKWebView. Load HTML File from App Bundle.class Test { public static void main(String[] args) { String str = “alegru”; char c = str.charAt(2); System.out.println(c); } } Output: e class Test { public static void main(String[] args) { String str = “alegru”; int index = str.indexOf(‘l’); System.out.println(index); } } Output: 1 class Test { public static void main(String[] args) { String str…
Read More Working With Strings in Java – Part 1Java Strings are one of the most commonly used data types in Java programming, and understanding how to work with them effectively is essential for any Java developer. In this tutorial, I will cover everything you need to know about Java Strings, from the basics of creating and manipulating Strings to advanced concepts like regular…
Read More Mastering Java String: A Comprehensive Tutorialimport java.util.Arrays; class Test { public static void main(String[] args) { String[] names = {“John”, “Steve”, “Melissa”, “Maria”}; System.out.println(Arrays.toString(names)); } } Output: [John, Steve, Melissa, Maria] copyOf(type [] a, int n) Returns a new copy of the array, which consists of the first n of its elements. import java.util.Arrays; class Test { public static…
Read More Arrays class in JavaDeclaring a multidimensional array in Java class Test { int[][] array1; int[][] array2; int array3[][]; } class Test { int[][] array1 = new int[3][3]; // 3 rows and 3 columns int[][] array2 = {{1, 2}, {3, 4}}; // 2 rows and 2 columns } class Test { public static void main(String[] args) { int[][] array…
Read More Multidimensional Arrays in Javaclass Test { int[] a; int b[]; int []c; } class Test { int[] a = new int[100]; int b[] = new int[]{1, 2, 3}; int[] c = {1, 2, 3}; } class Test { public static void main(String[] args) { // initialize the array int[] a = new int[3]; // add elements to array…
Read More Java ArraysIn this short Swift code example, you will learn how to check if file exists at specified path. Find a Documents directory on device Check if file exists at specified file path let fileNameToDelete = “myFileName.txt” var filePath = “” // Fine documents directory on device let dirs : [String] = NSSearchPathForDirectoriesInDomains(FileManager.SearchPathDirectory.documentDirectory, FileManager.SearchPathDomainMask.allDomainsMask, true) if…
Read More Check if a File ExistIn this short tutorial, you will learn how to Delete a file from the Documents directory using Swift. The below code will cover: Find a Documents directory on the device, Check if a file at the specified path exists, Delete file, Catch an error if an error takes place. let fileNameToDelete = “myFileName.txt” var filePath…
Read More Delete File Example in SwiftIn this tutorial, you will learn how to programmatically create a UITextField in Swift. It will be a short tutorial with a very simple code example, but it will cover all the following: Create UITextField of specific height and width, Position UITextField at the center of the view, Set UITextField backgroundColor, Set UITextField textColor, Set…
Read More Create a UITextField in Swift ProgrammaticallyJava is a popular object-oriented programming language used to build robust, scalable, and maintainable applications. One of the key features of Java is its support for method overloading and method overriding, which allows developers to write more efficient and flexible code. Method overloading and method overriding are two important concepts in Java that are often…
Read More Method Overloading vs Method Overriding in JavaIn Java, a class is a blueprint or a template that defines the properties and behaviours of objects. An object, on the other hand, is an instance of a class, created using the blueprint provided by the class. To illustrate this concept, let’s consider an example of a car. A car can be thought of…
Read More Object vs Class in Java: A Beginner’s Guide