hex - Creating a string character by character in Java -


so have created program:

class input {     public static void main(string[] args) throws exception {         string hexa;         hexa = "";         int pituus;         pituus = hexa.length();         int = 1;         char luku;         char luku2;         while (i < pituus) {             luku = hexa.charat(i);             luku2 = hexa.charat(i - 1);             luku++;             if (luku == 'g') {                 luku = '0';                 luku2++;             } else if (luku == ':')                 luku = 'a';              if (luku2 == '8')                 luku2 = '0';              system.out.print(luku2);             system.out.print(luku);             += 2;         }         system.out.println();     } }

as can propably tell, prints original hex string, adds 1 every pair of characters, , want maximum value of pairs 7f. program beginning, , proceed further need string characters printed. possible?

to create strings dynamically can use stringbuilder. append characters like

stringbuilder sb = new stringbuilder();// builder empty  // logic (char ch = 'a'; ch <= 'z'; ch++) {     // example add lower-case      // characters builder     sb.append(ch); } // after characres placed in builder  // lets convert string string alphabet = sb.tostring();  // , see got system.out.println(alphabet);

output: dynamically generated alphabet

abcdefghijklmnopqrstuvwxyz

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