JAVA


Java Program tutorials to check Prime nos
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Example: program to enter a no and print it is Prime number or not. |
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// program name Main052.java// program to enter a no and print it is Prime number or not.import java.util.Scanner;public class Main0{public static void main(String[] args){int no, i;System.out.print("Enter an integer : ");Scanner scan=new Scanner(System.in);no=scan.nextInt();int limit;limit= (int) Math.sqrt(no);i = 2;while(no%i != 0 && i <= limit)i++;if(i > limit)System.out.printf("%d is Prime Number",no);elseSystem.out.printf("%d is Not Prime Number",no);}} |
Output |
Enter an integer : 125125 is Not Prime NumberEnter an integer : 1717 is Prime Number |
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Example: program to enter a no and print it is Prime number or not. |
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// program name Main052New.java// program to enter a no and print it is Prime number or not.import java.util.Scanner;public class Main0{public static void main(String[] args){int n,i,f=0;Scanner scan=new Scanner(System.in);System.out.println("Enter a value: ");n=scan.nextInt();for(i=1;i<=n;i++){if(n%i==0)f++;}if(f==2){System.out.println(n+" is a prime number");}else{System.out.println(n+" is not a prime number");}}} |
Output |
Enter a value : 11is not a prime numberEnter a value : 33 is a prime number |