Exception in thread "main" java.lang.NumberFormatException: For input string: "S" [closed]

Question

I get this error when I try to use Integer.parseInt() with a single char.

String s = "s";
System.out.println((char) Integer.parseInt(s));

Is what gives me the error is this:

Exception in thread "main" java.lang.NumberFormatException: For input string: "S"

Answer 1

parseInt(String s) is used to convert integers in string form like "42" to value they represent in decimal. Use String.charAt(0) if you want first character.

Answer 2

The letter S is not a number. Did you mean to write the number 5?

String s = "5";
System.out.println((char) Integer.parseInt(s));

Or did you mean to print the ASCII or Unicode value of the character S?

char s = 's';
System.out.println((int) s);