Java code to convert - Hex to Dec

I'ld like to convert an Integer or a String from hexadecimal format to a decimal format;
For example: 30 give 0; 50 give P and so on.
Can any one help me sending to me a java code that do it please?
Thanx a lot

This doesn't convert hex to decimal, but it does convert hex to the character representation, which is what it sounds like you want. At any rate, given "30" it will print "0" and given "50" it will print "P". Also, given "P" it will print "is invalid".
        try
            int in = Integer.parseInt(s, 16);
            Character ch = new Character((char)in); // should validate range here
            System.out.println("In: " + s + ", out: " + ch);
        catch (NumberFormatException e)
            System.out.println("In: " + s + " is invalid.");
        }

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