To swap the case of a string, use.toLowerCase() for title case string. toLowerCase() for uppercase stringtoUpperCase() for lowercase stringLoop through what we discussed above for all the characters in the sting.for (int i = 0; i > len; i++) {    c = str.charAt(i);    // title case converted to ... Read More

Area of a rectangle is the product of its length and breadth. Therefore, to calculate the area of a rectangleGet the length of the rectangle form the user.Get the breadth of the rectangle form the user.Calculate their product.Print the product.ExampleBelow is an example to find the area of a rectangle ... Read More

For user input, use the Scanner class with System.in. After getting the input, convert it to character array −char[] a = s.next().toCharArray();Now, display it until the length of the character array i.e. number of elements input by the user −for (int i = 0; i < a.length; i++) {   ... Read More

Cube of a value is simply three times multiplication of the value with self.For example, cube of 2 is (2*2*2) = 8.AlgorithmSteps to find a cube of a given number in Java programming:Take integer variable A.Multiply A three times.Display result as Cube.Exampleimport java.util.Scanner; public class FindingCube {    public ... Read More

To convert decimal to binary, Java has a method Integer.toBinaryString(). The method returns a string representation of the integer argument as an unsigned integer in base 2.Let us first declare and initialize an integer variable.int dec = 25;Convert it to binary.String bin = Integer.toBinaryString(dec);Now display the “bin” string, which consists ... Read More

The number of times a word occurs in a string denotes its occurrence count. An example of this is given as follows −String = An apple is red in colour. Word = red The word red occurs 1 time in the above string.A program that demonstrates this is given as ... Read More

The Body Mass Index is the body mass in kilogram divided by the square of body height in meters. This is expressed as kg/m^2.A Java program that calculates the Body Mass Index (BMI) is given as follows.Exampleimport java.util.Scanner; public class Example {    public static void main(String args[]) {   ... Read More

Relational database design (RDD) models’ information and data into a set of tables with rows and columns. Each row of a relation/table represents a record, and each column represents an attribute of data. The Structured Query Language (SQL) is used to manipulate relational databases. The design of a relational database ... Read More

The delete() function of the Set object accepts a value and removes it from the current Set object. Syntax Its Syntax is as follows setObj.delete() Example    JavaScript Example           const setObj = new Set();       setObj.add('Java');   ... Read More

Convert videos to proper formats for HTML5 video on Linux shell using ffmpeg.When converting to an MP4, you want to use the h264 video codec and the aac audio codec because IE11 and earlier only support this combination.   ffmpeg -i input.mov -vcodec h264 -acodecaac -strict -2 output.mp4In this example, ... Read More