Help: Program not doing what it's supposed to

Code:

import java.util.*;

import java.lang.*;

class sub

{

    public static void main(String[] args)

    {

        String a = "1";

        String b = "2";

        String c = "3";

        String d = "4";

        String e = "5";

        String f = "6";

        String g = "7";

        Scanner sa1 = new Scanner(System.in);

        System.out.println("1) Encrypt");

        System.out.println("2) Encrypt");

        System.out.print("What do you want to do?: ");

        int ia1 = sa1.nextInt();

        if (ia1 == 1)

        {

            Scanner sa2 = new Scanner(System.in);

            System.out.print("What do you want to encrypt?: ");

            String ia2 = sa2.next();

            int ia2len = ia2.length();

            int cero = -1;            

            for (int loop = 0; loop < ia2len; loop++)

            {

                int cero1 = cero + 1;

                int cero2 = cero + 2;

                if (ia2.substring(cero1,cero2) == "a")

                    System.out.print(a);

                else if (ia2.substring(cero1,cero2) == "b")

                    System.out.print(b);

                else if (ia2.substring(cero1,cero2) == "c")

                    System.out.print(c);

                else if (ia2.substring(cero1,cero2) == "d")

                    System.out.print(d);

                else if (ia2.substring(cero1,cero2) == "e")

                    System.out.print(e);

                else if (ia2.substring(cero1,cero2) == "f")

                    System.out.print(f);

                else

                    System.out.print("no");

                System.out.println();

        

            }

        }    

    }

            

}

Code:

def a(classname,highdamageweaponname,lowdamageweaponname,ldmgname,hdmgname,yourhealth,enemyhealth,ldmgspellname,hdmgspellname):

import os

import random

os.system("clear")

monsters = ['cyclopse', 'duck', 'dragon', 'wizard', 'magician']

randommonster = random.choice(monsters) 

print "Class: %s" % classname

print "1) %s (More damage, but less armor)" % highdamageweaponname

print "2) %s (Less damage, but more armor)" % lowdamageweaponname

a = int(raw_input("You are battling a %s what weapon do you want?: " % randommonster))

while enemyhealth >= -1 and yourhealth >= -1:

hdmg = [0,5,0,15,0,20,30]

ldmg = [0,5,6,7,8,9,10] 

ldmgrandom = random.choice(ldmg)

hdmgrandom = random.choice(hdmg)

edmg = [ldmgrandom,hdmgrandom] 

edmgrandom = random.choice(edmg) 

mdmg = [1,2,3]

mdmgrandom = random.choice(mdmg)

os.system("clear")

if a == 1:

print "you have chosen a %s" % highdamageweaponname

print "Your Armor: ", yourhealth

print "Enemy Armor: ", enemyhealth

print "1) %s (High damage | High chance of missing)" % hdmgname

print "2) %s (Low damage | Low chance of missing)" % ldmgname

c = int(raw_input("Choose your attack: "))

if c == 1:

ddmg = hdmgrandom

yourhealth = yourhealth - edmgrandom

enemyhealth= enemyhealth- ddmg

print "You Did ", ddmg, "Damage"

raw_input("Press Enter To Continue")

elif c == 2:

ddmg = hdmgrandom

yourhealth = yourhealth - edmgrandom

enemyhealth= enemyhealth- ddmg

print "You Did ", ddmg, "Damage"

raw_input("Press Enter To Continue")

if a == 2:

print "you have chosen a %s" % lowdamageweaponname 

print "Your Armor: ", yourhealth + 20

print "Enemy Armor: ", enemyhealth

print "1) %s (High damage | High chance of missing)" % hdmgspellname

print "2) %s (Low damage | Low chance of missing)" % ldmgspellname

c = int(raw_input("Choose your attack: "))



if c == 1:

ddmg = hdmgrandom

yourhealth = yourhealth - edmgrandom

enemyhealth= enemyhealth- (ddmg - mdmgrandom)

print "You Did ", ddmg, "Damage"

raw_input("Press Enter To Continue") 

elif c == 2:

ddmg = ldmgrandom

yourhealth = yourhealth - edmgrandom

enemyhealth= enemyhealth- (ddmg - mdmgrandom)

print "You Did ", ddmg, "Damage"

raw_input("Press Enter To Continue") 

if c > 2 or c < 1:

print "Invalid attack"

raw_input("Press Enter To Continue")

if yourhealth <= 0:

os.system("clear")

print "You Died..."



elif enemyhealth<= 0:

os.system("clear") 

print "You Killed Him!"

def menu():

import os

import random

os.system("clear")

print "############################################"

print " City of Warscape "

print "###########################################"

print " "

print "Choose Your Class"

print "1) Warrior"

print "2) Ranger"

print "3) Mage"

x = int(raw_input("What Class What You Like To Be?: "))

if x == 1:

a('Warrior','Mace','Sword','Pound','Bash',100,100,'Slice','Dice')

if x == 2: 

a('Ranger','Bow','Knives','Steady Shot','Power Shot',100,100,'Toss','Hurl')

if x == 3:

a('Mage','Staff','Wand','Poke','Slash',100,100,'Fireball','Froststrike')

menu()