A queue is a linear data structure where elements are stored in the FIFO manner. Here, FIFO stands for First In First Out which means the first element inserted would be the first element to be accessed. In this article we will see how to perform different queue operations like Enqueue and Dequeue using Java programming language. Queue in Java In Java, the Queue interface, a sub interface of Java Collection Interface, provides the features of queue data structure. Since it is an interface, the Queue interface needs a concrete class for the implementation and the most common classes are ... Read More

Array in Java is called as a non primitive data type which stores a fixed number of single type values. It is called a One-dimensional array. In this article, we will see how to perform different array operations like checking duplicate elements, printing array in reverse order, checking largest element, checking smallest element, finding sum of all array elements by using Java Menu driven program. We will be implementing the application using a switch case. To show you some instances − Instance-1 Suppose we have created an array containing 6 elements and array elements are [2, 4, 6, 2, 6, ... Read More

When we go anywhere for any type of membership they have different prices for different plans. For example silver membership, gold membership, diamond membership, platinum membership etc. where the silver membership costs less than others and platinum membership costs more than other plans. In this article we will see how to check the cost of a membership by using the Java programming language. We will be implementing the application using a switch case. To show you some instances  Instance-1 Suppose we have Rs 1840 as base membership price and you want to have a silver membership. The cost of silver ... Read More

In Java we have primitive numeric data types for numbers that are short, byte, int, long, float and double. These numeric data types allow us to represent different integer and real numbers based on their range as a specific data type has its lower and upper range. Below are the 6 primitive numeric data types  byte: Range -128 to 127 (Size 1 byte) short: Range -32, 768 to 32, 767 (Size 2 bytes) int: Range -2, 147, 483, 648 to 2, 147, 483, 647 (Size 4 bytes) long: Range -9, 223, 372, 036, 854, 775, 808 to 9, 223, 372, ... Read More

In this article, we will see a menu driven program to check if the entered character is number, string or special character by Java programming language. We will be implementing the application using a switch case. To show you some instances  Instance-1 Suppose the entered character is ‘a’ then the output should be “Entered character is a String”. Instance-2 Suppose the entered character is ‘1’ then the output should be “Entered character is a number”. Instance-3 Suppose the entered character is ‘$’ then the output should be “Entered character is a Special character”. Syntax To check whether ... Read More

A number is said to be a positive number if it is greater than 0 and if it is less than 0 then it is called a negative number. The negative number is followed by a minus sign (-) to identify it as a negative number. A number is said to be an even number if it is divisible by 2 else it is called an odd number. In this article, we will see how to check if a number is positive, negative, or even, odd by using Java programming language. We will be implementing the application using a switch ... Read More

A circle is a round shape two-dimensional diagram which has no corners. Every circle has an origin point and every point on the circle maintains equal distance from the origin. The distance between the origin and a point in a circle is known as Radius of the circle. And similarly, if we draw a line from one edge to another edge of the circle and the origin is held in the middle of it, that line is known as diameter of the circle. Basically, the diameter is double of the length of the radius. Chord of the circle refers to ... Read More

As per the problem statement we have to write a Java program to replace each element of the array with its next element. In Java, the array is an object. It is a non-primitive data type which stores values of similar data types. Before discussing the solution for the given problem, let's understand the problem statement with an example − Example Scenario: Input: arr[] = {12, 23, 11, 64} Output: updated array = {23, 11, 64, 12} Algorithm Follow the steps below to replace each element of the array with its next element − Step 1 − Declare ... Read More

A circle is a round shape two-dimensional diagram which has no corners. Every circle has an origin point and every point on the circle maintains equal distance from the origin. The distance between the origin and a point in a circle is known as Radius of the circle. And similarly, if we draw a line from one edge to another edge of the circle and the origin is held in the middle of it, that line is known as diameter of the circle. Basically, the diameter is double of the length of the radius. A square consists of four sides ... Read More

Roman Number − Based on the ancient Roman system, symbols are used to represent the numbers. These numbers are known as Roman numbers. Symbols are I, V, X, L, C, D, and M use respectively for 1, 5, 10, 50, 100, 500, and 1, 000. Integer Number − Integer number is nothing but the whole number which consists ofpositive, negative and zero value. Fraction numbers are not integers. Here we have set the symbol values as per their integer values. Whenever a roman number is entered as input we divide into units and then calculate the appropriate roman number. I ... Read More