Found 271 Articles for Java8

Following is the Java program which prints all the divisors of a given number.Programimport java.util.Scanner; public class DivisorsOfNaturalNumber {    public static void main(String args[]) {       Scanner sc = new Scanner(System.in);       System.out.println("Enter required number :");       int num = sc.nextInt();             for(int i = 1; i

Factors are the numbers we multiply to get another number.factors of 14 are 2 and 7, because 2 × 7 = 14.Some numbers can be factored in more than one way.16 can be factored as 1 × 16, 2 × 8, or 4 × 4.A number that can only be factored as 1 times itself is called a prime number.The first few primes are 2, 3, 5, 7, 11, and 13.The list of all the prime-number factors of a given number is the prime factors of a number. The factorization of a number into its prime factors and expression of ... Read More

If the sum of the digits of a number is divisible by 3, then the number is divisible by 3.Some examples of numbers divisible by 3 are as follows.The number 85203 is divisible by 3 because the sum of its digits (8 + 5 + 2 + 0 + 3 = 18) is divisible by 3.The number 79154 is not divisible by 3 because the sum of its digits (7 + 9 + 1 + 5 + 4 = 26) is not divisible by 3.Programimport java.util.Scanner; public class DivisibleBy3 {    public static void main(String args[]) {       Scanner sc = new Scanner(System.in);       System.out.println("Enter a number :");       String num = sc.nextLine();       int digitSum = 0;             for(int i = 0; i

A number is divisible by 11 if the difference between the sum of its alternative digits is divisible by 11.i.e. if (sum of odd digits) – ( sum of even digits) is 0 or divisible by 11 then the given number is divisible by 11.Programimport java.util.Scanner; public class DivisibleBy11 {    public static void main(String args[]) {       Scanner sc = new Scanner(System.in);       System.out.println("Enter a number :");       String num = sc.nextLine();       int digitSumEve = 0;       int digitSumOdd = 0;            for(int i = 0; i

If the sum of the digits of a number is divisible by 9, then the number is divisible by 9.Some examples of numbers divisible by 9 are as follows. The number 51984 is divisible by 9 because the sum of its digits (5+ 1 + 9 + 8 + 4 = 27) is divisible by 9.The number 91403 is not divisible by 9 because the sum of its digits (9 + 1 + 4 + 0 + 3 = 17) is not divisible by 9.Programimport java.util.Scanner; public class DivisibleBy9 {    public static void main(String args[]) {       Scanner sc = new Scanner(System.in);       System.out.println("Enter a number :");       String num = sc.nextLine();       int digitSum = 0;       for(int i = 0; i

ProgramFollowing is the example to calculate the GCD of the numbers of an array.Live Demopublic class GCDOfArrayofNumbers{    public static int gcd(int a,int b){       int res = 0;       while (b > 0){          int temp = b;          b = a % b;          a = temp;          res = a;       }       return res;    }    public static void main(String arg[]){       int[] myArray = {3, 6, 8};       int result = gcd(myArray[0],myArray[1]);       for(int i = 2; i < myArray.length; i++){          result = gcd(result, myArray[i]);       }       System.out.println("Gcd of n numbers is: "+result);    } }OutputGCD of n numbers is: 1

L.C.M. or Least Common Multiple of two values, is the smallest positive value which the multiple of both values.For example multiples of 3 and 4 are:3 → 3, 6, 9, 12, 15 ...4 → 4, 8, 12, 16, 20 ...The smallest multiple of both is 12, hence the LCM of 3 and 4 is 12.ProgramFollowing example computes the LCM of array of numbers.Live Demopublic class LCMofArrayOfNumbers {    public static void main(String args[]) {       int[] myArray = {25, 50, 125, 625};       int min, max, x, lcm = 0;             for(int i = 0; i

Following is an example which computes find LCM and GCD of two given numbers.Programimport java.util.Scanner; public class LCM_GCD {    public static void lcm(int a, int b){       int max, step, lcm = 0;       if(a > b){          max = step = a;       } else{          max = step = b;       }       while(a!= 0) {          if(max%a == 0 && max%b == 0) {             lcm = max;             break;          }          max += step;       }       System.out.println("LCM of given numbers is :: "+lcm);    }    public static void gcd(int a,int b){       int i, hcf = 0;          for(i = 1; i

The Java.io.StringWriter class is a character stream that collects its output in a string buffer, which can then be used to construct a string. Closing a StringWriter has no effect.The Java.io.PrintWriter class prints formatted representations of objects to a text-output stream.Using these two classes you can convert a Stack Trace to a String.ExampleLive Demoimport java.io.PrintWriter; import java.io.StringWriter; public class StackTraceToString {    public static void main(String args[]) {       try {          int a[] = new int[2];          System.out.println("Access element three :" + a[3]);       } catch (ArrayIndexOutOfBoundsException e) ... Read More

ExampleYou can check if a given string is Numeric as shown in the following program.Live Demoimport java.util.Scanner; public class StringNumeric {    public static void main(String[] args) {       Scanner sc = new Scanner(System.in);       System.out.println("Enter a string ::");       String str = sc.next();       boolean number = str.matches("-?\d+(\.\d+)?");       if(number) {          System.out.println("Given string is a number");       } else {          System.out.println("Given string is not a number");       }    } }OutputEnter a string :: 4245 Given string is a number