In java please

Problem 1 Write a new class named Bar that prompts the user to enter a positive integer. The program should then display a line consisting of the entered number of asterisks using a while loop. If the user enters a number that is not positive, the program should display an error message (see example below). Example 1: Enter a positive number: 6 Example 2: Enter a positive number: 11 Example 3: Enter a positive number: -4 -4 is not a positive numbe:r