How to Convert String to Integer using ASCII

How to Convert String to Integer using ASCII

SOURCE : StringToInteger.java

public class StringToInteger {

	public static void main(String[] args) {

		String str = "4536";
		int sum = 0;
		char[] itt = str.toCharArray();
		int asciizero = (int) '0';
		for (Character c : itt) {

			int tempascii = (int) c;
			sum = (sum * 10) + (tempascii - asciizero);
		}
		System.out.println(sum);
	}

}

INPUT

String str = "4536"

OUTPUT

4536

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