java test if a string is a int
public static boolean isInt(String str) {
try {
@SuppressWarnings("unused")
int x = Integer.parseInt(str);
return true; //String is an Integer
} catch (NumberFormatException e) {
return false; //String is not an Integer
}
}java digit in number
public static void recursion(int number) {
if(number > 0) {
recursion(number/10);
System.out.printf("%d ", (number%10));
}
}Copyright © 2021 Codeinu
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