Check if a Number is valid using Java
Below is a snippet to check if a number is valid or not. For example, the string “1.1.1” contains an invalid number, while the string “2.1” contains a valid number. The Code public class Main { public static void main (String[]args) { int i; System.out.println("Enter a Number:"); String str = System.console().readLine (); try { Double.parseDouble(str);... » read more