USING JAVA!!IN JAVA

Write a program that checks to see if a string entered by the user is a "palindrome". It should do something like this: prompt the user for input read that input as a string if the first character of the string is a '-', exit the program if any character in that string is not numeric, display an error message and prompt again check to see if the entered string is a palindrome if it's a palindrome, (the same forwards and backwards) say so if it's not a palindrome, say so