im creating a program that will convert certain character into its ascii value then i will change the value. for example the ascii value of A is 65 right? but i want to change the value of it into 1 so if i input A the output of it is 1. how am i supposed to do this? pls give some ideas. tnx
theCompiler 0 Light Poster
JamesCherrill 4,733 Most Valuable Poster Team Colleague Featured Poster
A Java char is, by definition, a numeric value that represents a character. So you can freely mix character representations such as 'a' or 'Z' and numeric expressions, eg
int i = 'C'; // i = 67
int j = 'C' - 'A'; // j = 2
theCompiler 0 Light Poster
if i do that then i must have many declarations to be used. im trying to do a very simple password encryption.
JamesCherrill 4,733 Most Valuable Poster Team Colleague Featured Poster
Basically you can convert the password string to an array of chars, and do your arithmetic on that in a simple loop - here's some pseudo-code to point you in the direction:
String pw = ... get the password
char[] ca = pw.toCharArray() // now you have the chars separated into the array
loop thru array adding/subtracting some value from each char
pw = new String(ca) // convert char arry back to a String
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