Programming Articles - Page 2967 of 3363

To check whether the entered value is ASCII 7-bit control character, check the characters ASCII value before 32 and 127. These are the control characters.Here, we have a character.char one = ' n ';Now, we have checked a condition with if-else to check for character less than 32 (ASCII) and equal to 127.if (one < 32 || one == 127) { System.out.println("Given value is a control character!"); } else {    System.out.println("Given value is not a control character!"); }Example Live Demopublic class Demo {    public static void main(String []args) {       char one = '';       ... Read More

In this article, we will discover how we can check whether a value entered is an ASCII 7-bit alphabetic character in Java. This process involves whether a character belongs to the ranges 'a' to 'z' or 'A' to 'Z' in the ASCII table. The character can be checked with some simple if statements to determine if it is in either of these two ranges and then corresponding messages are displayed. Problem StatementGiven a character, write a Java program to check whether the entered value is an ASCII 7-bit alphabetic character or not.Input Initial character = 'r' input = '1'Output Character: ... Read More

In this article, we will explore how to verify whether or not a given character is an uppercase letter and, more specifically, falls within the range of A to Z. This is useful when a user’s input consists of some uppercase letter or when a program needs to restrict itself to uppercase letters. We use concepts such as if-else statements, character comparison, and conditional logic to solve this problem. Problem StatementWe need to write a program that checks if a character falls within the uppercase alphabetic range, which spans from 'A' to 'Z'.Input The input will consist of a single character.Output ... Read More

In this article, we'll learn how to check whether the entered value is ASCII 7-bit alphabetic lowercase in Java. In ASCII, the lowercase alphabets begin with the character ‘a’ and end with ‘z’. We will write a program checking whether a character is a lowercase alphabetic character using a simple if-else statement. Problem Statement We are given a character, and we need to create a Java program that checks whether the character is a lowercase letter in the ASCII 7-bit range, meaning it falls between 'a' and 'z'. We will also check if the character is uppercase, meaning ... Read More

To compare two objects of Character type in Java, use the compareTo() method.Firstly, we have created two Character type.Character one = new Character('m'); Character two = new Character('k');Now, to compare them, we have used the compareTo() method.int res = one.compareTo(two);The following is the example that compares character objects.Example Live Demopublic class Demo {    public static void main(String []args) {       Character one = new Character('m');       Character two = new Character('k');       System.out.println("Character object 1: "+one);       System.out.println("Character object 2: "+two);       int res = one.compareTo(two);       if ... Read More

A prime number is a number that is only divisible by one or itself. Some of the prime numbers are 2, 3, 5, 7, 11, 13 etc.Some of the different methods to find a prime number in Java are given as follows −Method 1 - Find if a number is prime without using a functionA program that finds if the given number is prime without using a function is given as follow −Example Live Demopublic class Example {    public static void main(String args[]) {       int num = 11, flag=0;       if(num == 0||num == 1) {          System.out.println( num + " is not a prime number");       } else {          for(int i = 2; i

Permutation and Combination are a part of Combinatorics. Permutation is the different arrangements that a set of elements can make if the elements are taken one at a time, some at a time or all at a time. Combination is is the different ways of selecting elements if the elements are taken one at a time, some at a time or all at a time.An example of this is given as follows −Permutation = factorial(n) / factorial(n-r); Combination = factorial(n) / (factorial(r) * factorial(n-r)); n = 5 r = 3 Permutation = 60 Combination = 10A program that demonstrates this ... Read More

A stack class is provided by the Java collection framework and it implements the Stack data structure. The stack implements LIFO i.e. Last In First Out. This means that the elements pushed last are the ones that are popped first.The following are some of the methods.Sr.NoMethods & Description1boolean empty()Tests if this stack is empty. Returns true if the stack is empty, and returns false if the stack contains elements.2Object peek( )Returns the element on the top of the stack, but does not remove it.3Object pop( )Returns the element on the top of the stack, removing it in the process.4Object push(Object ... Read More

A set in Java is modelled after the mathematical set and it cannot contain duplicate elements. The set interface contains the methods that are inherited from Collection. The method remove() removes the specified items from the set collection. A program that demonstrates the removal of items from Set using remove() is given as follows − Problem Statement Given a Set, write a Java program to remove the elements from the Set − Input [115, 20, 5, 70, 89, 10, 30, 111] Output [115, 20, 5, 70, 10, 30, 111] ... Read More

For converting a primitive type value to a string in Java, use the valueOf() method.Let’s say we want to convert the following double primitive to string.double val4 = 8.34D;For that, use the valueOf() method. It converts it into a string.String str4 = String.valueOf(val4);Example Live Demopublic class Demo {    public static void main(String[] args) {       int val1 = 5;       char val2 = 'z';       float val3 = 9.56F;       double val4 = 8.34D;       System.out.println("Integer: "+val1);       System.out.println("Character: "+val2);       System.out.println("Float: "+val3);       ... Read More