Java program to check the perfect number. Write a program that takes a positive integer and returns true if the number is the perfect number.

Write a java program to count the number of digits before and after the decimal point. For a given double number with at least one

Write a java program using Hashmap (Employees & Designations). A Company wants to obtain employees of a particular designation. You have been assigned as the

Write a java program to Calculate Grades. A School wants to give assign grades to its students based on their marks. You have been assigned

Write a program to validate the Date of Birth given as input in String format (MM/dd/yyyy) as per the validation rules given below. Return true

Write a java program to convert ArrayList to String Array. how to convert ArrayList into the string array in java Write a program that performs

Write a program to generate the state ID. 1)Read n Strings as input(as State Name). 2)Create a String Array to Store the above Input. 3)Write

Write a program that takes two ArrayLists as input and finds out all elements present either in A or B, but not in both. Input and

Write a small price calculator application with the below-mentioned flow: Read a value n indicating the total count of devices. This would be followed by

Write a java program to read a string containing the date in DD-MM-YYYY format. find the number of days in the given month. Note –