Convert a String to a Number

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Hello World

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Define a Class

The static method Integer.parseInt will do the trick

There is a danger that the string does not represent a valid number in which case an exception will be raised.

There are plenty of similar routines such as: Float.parseFloat Long.parseLong Double.parseDouble Boolean.parseBoolean

The value "1234" is a string, you need to treat it as a num ber - to add 1, giving 1235.

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public class Demo{ public static void main(String[] argv) { String s = "1234"; int i = Integer.parseInt(s); System.out.println(i+1); } }

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