Write a Java program that reads a number from the command line and checks whether it is a prime number. A prime number is a number which is divisible only by 1 and the number itself. For instance, 3 is a prime number but 6 is not a prime number
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Write a Java program that reads a number from the command line and checks whether it is a
prime number. A prime number is a number which is divisible only by 1 and the number itself.
For instance, 3 is a prime number but 6 is not a prime number
Step by step
Solved in 3 steps with 3 images
- Write a Java program that reads two positive integers num1 and num2 (assume num1 < num2). Then, the program will display all perfect numbers between num1 and num2. A positive integer is called a perfect number if it is equal to the sum of all of its positive divisors, excluding itself. For example, 6 is the first perfect number because 6 = 3 +2 +1. The next is 28 = 14 +7+4+2+1. Hint: use modulus (%) to find the divisor of a number. Sample Input/Output Input the 2 numbers: 6 1001 Perfect Numbers are: 28 496 Note: Your answer should follow the given sample input / output.Write a java program that accepts a 5 integer number (from the user) and calculates the sum of all its digits. For example, integer 12345 must display 15 (i.e. 1 + 2 + 3 + 4 + 5)Write a Java program that reads two positive integers num1 and num2 (assume num1 < num2). Then, the program will display all perfect numbers between num1 and num2. A positive integer is called a perfect number if it is equal to the sum of all of its positive divisors, excluding itself. For example, 6 is the first perfect number because 6 = 3 +2 + 1. The next is 28 = 14 +7+4+2+1. Hint: use modulus (%) to find the divisor of a number. Sample Input/Output Enter two numbers: 6 1001 6 is a perfect number 28 is a perfect number 496 is a perfect number
- write a java program A twin prime is a prime number that is either 2 less or 2 more than another prime number. For example (41, 43) are both primes and are twin primes because 41 + 2 = 43. Write a program that asks the user to enter a positive number and checks if this number is prime. If the number is prime then the program must check if it has a twin prime. So if n is prime, then n - 2 or n + 2 should be checked. The program repeats until the user enters -1. Sample Run: Enter a positive integer (-1 to end): -5 Invalid Number Enter a positive integer (-1 to end): 61 61 is prime 59 and 61 are twin prime Enter a positive integer (-1 to end): 137 137 is prime 137 and 139 are twin prime Enter a positive integer (-1 to end): 30 30 is not prime Enter a positive integer (-1 to end): 23 23 is prime 23 does not have a twin prime Enter a positive integer (-1 to end): -1Write a java program that determines the number of digits in an integer: Enter an integer: 374 The number 374 has 3 digits Hint: Divide the integer by 10 repeatedly until it becomes 0. The number of divisions performed will be the integer of digits in the integer.In JAVA language: Write a program to print the sum of all numbers which are divisible by 5 in the range 1 to 500.
- A Newton number is a 4-digit integer number for which the sum of its digits to power 4 is equal to the number itself. Example of a Newton number is 1634 since: 1634 1*1*1*1+6*6*6*6+3*3*3*3+4*4*4*4 which is: 1+ 1296+256+81. Write a Java program that checks whether or not a number is a Newton number. Sample Run1: Enter an integer number of 4 digits: 3712 3712 is not a Newton number Sample Run2: Enter an integer number of 4 digits: 1634 1634 is not a Newton number Sample Run2: Enter an integer number of 4 digits: 234 Invalid input!!Write a java program so it keeps a count of the number of guesses that the user makes. When the user correctly guesses the random number, the program should display the number of guesses.Write an application that reads an integer value from the user and prints the sum ofall even integers between 2 and the input value, inclusive. Print an error message ifthe input value is less than 2. Use Java. Sample Run Examples: Example 1:the user enters 14Output: Sum: 56Example 2:the user enters 1Output: Error number must be greater than 1
- Write a program in java that checks to see if the user won the lottery. Assume the winning lottery numbers are 8, 13, 27, 53, and 54. Ask the user for five numbers and compare those numbers to the winning numbers to determine how many matches the user got. In a lottery, the order of the numbers doesn't matter.Write a program java that reads a number of feet from the user, then prints out either the same number if the feet are less than 5280, or otherwise the number of miles and feet. A few examples of running this program: Enter the number of feet: 1234 You entered: 1234 feet Enter the number of feet: 10560 You entered: 2 miles Enter the number of feet: 10561 You entered: 2 miles 1 foot Your program must correctly print the miles and feet, correctly using the singular form (foot instead feet, mile instead of miles) if there is just one mile or one foot. Your program should also check that the number of feet entered by the user is greater than 0. If the number is 0 or less, your program should print "Number out of range" instead of "You entered.:.... Enter the number of feet: 0 Number out of range For this program, you may benefit from using the % (modulo) operation. For example, if you have a variable totalFeet, then you can have code such as long miles long feet totalFeet / 5280; totalFeet…Write a Java program which allow user to enter a number that represents repetition. Then, the user will need to enter any random decimal number based on the number of repetition. Lastly, the program will display the average of these numbers and count how many numbers that above the average.