Convert String to byte - A Java Code Example

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This example shows how to convert a String to a byte.
The String can only contain digits (or start with the - sign) and the number has to be within the byte range, otherwise a NumberFormatException will be thrown.

The output from the code below is:

65
Tried to convert an invalid value

/**
*
* @author javadb.com
*/
public class Main {

    /**
     * Example method for converting a String to a byte
     */
    public void convertStringToByte() {

        try {
            String s = "65";

            byte b = Byte.valueOf(s);

            System.out.println(b);

            //Causes a NumberFormatException since the value is out of range
            System.out.println(Byte.valueOf("129"));

        } catch (NumberFormatException ex) {
            System.out.println("Tried to convert an invalid value");
        }

    }

    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) {
        new Main().convertStringToByte();
    }
}

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