Some Java Problems to practice(part 22)

Codynn
6 Min Read

I’ve included a list of some of the Java programs below. You may also view all of the Java programs on our mobile app. I strongly advise you to use our mobile app for a better experience.

Please click the link to get our app–> https://play.google.com/store/apps/details?id=com.allbachelor.javaapp&hl=en&gl=US

216. Write a program in java TO ENTER ANY DIGIT AND PRINT CUBE OF EVEN DIGITS.

import java.util.Scanner;

class CubeOfEvenDigit {
        public static void main(String args[])
        {
           Scanner scanner= new Scanner(System.in);
            System.out.println("Enter any number");
          int n= scanner.nextInt();
            int sum = 0;
            for(int i = 1; i   <= n; i++)
                sum += (2 * i) * (2 * i)
                        * (2 * i);

            System.out.println(sum);
        }

        }  

217. Write a program to enter any 10 numbers and display the greatest one.

import java.util.Scanner;  
     
   class GreatestNumber {  
   public static void main(String[] args) {  
   Scanner sc = new Scanner(System.in);  
   System.out.println("Enter your 10 numbers");  
   int[] num = new int[10];  
   for (int i = 0; i   < 10; i++) {  
   num[i] = sc.nextInt();  
   }  
   int max = num[0];  
   for (int i = 0; i   < 10; i++) {  
   if (num[i] > max) {  
   max = num[i];  
   }  
   }  
   System.out.println("The greatest number is " + max);  
   }  
   }  

218. Write a program in java TO ENTER ANY DIGIT AND PRINT SQUARE OF ODD.

import java.util.Scanner;  
  
class SquareOfOddDigits {  
   public static void main(String[] args) {  
Scanner scanner = new Scanner(System.in);  
       System.out.println("Enter any number");  
int n = scanner.nextInt();  
       System.out.println("SQUARE OF ODD DIGITS ARE");  
       while(n!=0){  
           int r= n%10;  
           if (r%2==1){  
               System.out.println(r*r);  
               n= n/10;  
           }  
       }  
   }  
}    

219. Write a program in java to generate the following series 54321,5432,543,54,5.

class Series {  
   public static void main(String[] args) {  
int n = 54321;  
  
       while(n!=0){  
           System.out.print(n+" ");  
           n=n/10;  
           }  
       }  
   } 

220. Write a program to enter any 20 numbers and display the smallest one using.

class SmallestNumber {  
  
   public static void main(String args[]){  
       int a[]={1,2,5,6,3,2};  
       int temp;  
       int total =6;  
       for (int i = 0; i   < total; i++)  
       {  
           for (int j = i + 1; j   < total; j++)  
           {  
               if (a[i] > a[j])  
               {  
                   temp = a[i];  
                   a[i] = a[j];  
                   a[j] = temp;  
               }  
           }  
       }  
       System.out.println(a[0]);  
   }}  

221. Write a program to solve a quadratic equation ax2+bx+c=0 on the basis of the coefficient values a, b, and c.

import java.util.Scanner;  
     
   class Equation {  
   public static void main(String[] args) {  
   Scanner sc = new Scanner(System.in);  
   System.out.println("Enter a, b, and c");  
   int a = sc.nextInt();  
   int b = sc.nextInt();  
   int c = sc.nextInt();  
   double d = Math.pow(b, 2) - 4 * a * c;  
   if (d   < 0) {  
   System.out.println("The equation has no real roots");  
   } else if (d == 0) {  
   double x = -b / (2 * a);  
   System.out.println("The equation has one real root " + x);  
   } else {  
   double x1 = (-b + Math.sqrt(d)) / (2 * a);  
   double x2 = (-b - Math.sqrt(d)) / (2 * a);  
   System.out.println("The equation has two real roots " + x1 + " and " + x2);  
   }  
   }  
   }  

222. Write a program in java to print -30,-20,-10,0,10,……………20th terms.

class Series {  
  
   public static void main(String args[]) {  
       int a = -30;  
       for (int i = 0; i   < 20; i++) {  
           System.out.println(a);  
           a = a + 10;  
       }  
   }  
   }  

223. Write a program in java to ask any string and print only consonant by removing vowels.

import java.util.Scanner;  
  
class Vowels {  
   public static void main(String[] args) {  
   Scanner scanner = new Scanner(System.in);  
       System.out.print("Enter a String : ");  
   String str = scanner.next();  
       int count = 0;  
       String word = "";  
  
       for (int i = 0; i   < str.length(); i++) {  
           char character =str.charAt(i);  
           if(character==\'a\' || character==\'A\' || character==\'e\'|| character==\'E\' ||  
                   character==\'i\' || character==\'I\' || character==\'o\' || character==\'O\' ||  
                   character==\'u\' || character==\'U\'){  
  
           }  
           else{  
               word=word+character;  
           }  
       }  
       System.out.println(word);  
   }  
   }  

224. Write a program in java to ask number and count total number of digits.

 import java.util.Scanner;  
     
   class TotalNumberDigit {  
   public static void main(String[] args) {  
   Scanner sc = new Scanner(System.in);  
   System.out.println("Enter any number");  
   int num = sc.nextInt();  
   int count = 0;  
   while (num != 0) {  
   num = num / 10;  
   count++;  
   }  
   System.out.println("The total number of digits is " + count);  
   }  
   }  

225. Write a program in java to find the sum of all even numbers from 2 to 100.

import java.util.Scanner;  
  
class Series {  
   public static void main(String[] args) {  
  
       for (int i = 2; i   < 100; i=i+2) {  
           System.out.print(i+ " ");  
       }  
   }  
   }  
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