Password Generator

gistfile1.txt

/**
 * Bulk of the code that makes the actual password.
 * 
 * Jake Landaiche 
 * 2.0
 */

import java.util.*;

public class PasswordGenerator
{
    public String makePass(int input){
        int chars = 0;
        String pass = "";
        String alphaLower = "abcdefghijklmnopqrstuvwxyz";
        String alphaUpper = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
        String numer = "1234567890";
        String sym = "!@#$%^&*?";
        boolean hasCap = false;
        boolean hasLower = false;
        boolean hasNumer = false;
        boolean hasSym = false;
        while(chars < input){
            int charType = (int)(Math.random() * 4) + 1;
            int alphaSpot = (int)((Math.random() * 25) + 1);
            int numerSpot = (int)((Math.random() * 9) + 1);
            int symSpot = (int)((Math.random() * 8) + 1);            
            if(charType == 1){
                pass += alphaUpper.substring(alphaSpot, alphaSpot + 1);
                hasCap = true;
            }else if(charType == 2){
                pass += numer.substring(numerSpot, numerSpot + 1);
                hasNumer = true;
            }else if(charType == 3){
                pass += sym.substring(symSpot, symSpot + 1);
                hasSym = true;
            }else if(charType == 4){
                pass += alphaLower.substring(alphaSpot, alphaSpot +1);
                hasLower = true;
            }
            chars++;
            System.out.println(chars);
            if(hasCap == false && chars == input || hasLower == false && chars == input || hasNumer == false && chars == input || hasSym == false && chars == input){
                hasCap = false;
                hasLower = false;
                hasNumer = false;
                hasSym = false;
                chars = 0;
                pass = "";
            }
        }

        return pass;
    }
}