Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException: 12

Well, an ArrayIndexOutOfBoundsException means you're trying to access an element of an array that doesn't exist. Now, arrays are 0-indexed, which means they have array.length elements, starting at 0. Thus, what must the index of the final element be and where does your code try to move beyond that element?

I m getting this error while i m trying to run my program and i don't understand why that happens.

This is where it happens:

Just count: if an array has twelve elements their index values are: 0, 1, 2 ... 11

kind regards,

Jos

Tnx a lot guys i ve fixed it

When you don't need the array index in the loop (which is the case at least half the time, I bet) you can use the new enhanced for loop syntax, introduced in 1.5:
http://java.sun.com/j2se/1.5.0/docs/...e/foreach.html

Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException:

The following program gives the above error

import java.io.*;
class Live
{
public static void main(String args[])throws IOException
{
float tot=0;
String ar[]=new String[25];
int aa[]=new int[25];
String ag[]=new String[15];
int gg[]=new int[15];
String at[]=new String[10];
int tt[]=new int[10];
String ac[]=new String[10];
int cc[]=new int[10];
BufferedReader buf=new BufferedReader(new InputStreamReader(System.in));
System.out.println("Choose the alternative for the place you would like to visit from the following:");
System.out.println("1: Big Bazaar");
System.out.println("2: Sgs Mall");
System.out.println("3: Central");
System.out.println("4: Pune Central");
String s=buf.readLine();
int a=Integer.parseInt(s);
switch(a)
{
case 1:System.out.println(" * Welcome to Big Bazaar *");
break;
case 2:System.out.println(" ** Welcome to Sgs Mall **");
break;
case 3:System.out.println(" * Welcome to Central *");
break;
case 4:System.out.println(" ** Welcome to Pune Central **");
break;
default:System.out.println("This place does not exist in the alternatives");
}
for(int hu=0;hu<=5;hu++)
{
System.out.println(" Choose the alternative to which section would you like to go to from our mall");
System.out.println("1: Clothes");
System.out.println("2: Grocery");
System.out.println("3: Eatables");
System.out.println("4: Stationery");
String t=buf.readLine();
int b=Integer.parseInt(t);
switch(b)
{
case 1:System.out.println("You are in the clothes section");
break;
case 2:System.out.println("You are in the Grocery section");
break;
case 3:System.out.println("You are in the eatable section");
break;
case 4:System.out.println("You are in the Stationery section");
break;
default:System.out.println("Sorry! This section does not exist in our mall");
}
if(b==1)
{
System.out.println("Sr no"+"\t\t"+"ITEM"+"\t\t\t\t\t"+"PRICE");
ar[0]="Any shirt from VAN HEUSEN brand";
ar[1]="Any shirt from LOUIS PHILIPPE brand";
ar[2]="Any shirt from WILLS LIFESTYLE brand";
ar[3]="Any party wear shirt PROVOGUE brand";
ar[4]="Any shirt from AUSTIN REED brand";
ar[5]="Blackberry flat front trousers(white)";
ar[6]="Blackberry flat front trousers(black)";
ar[7]="Any zodiac tie";
ar[8]="Life 3/4ths";
ar[9]="Life cargo";
ar[10]="Life Denim shorts";
ar[11]="Formal shirt for women from AUSTIN REED";
ar[12]="Ladies Denim Jeans";
ar[13]="Kashish Sarees";
ar[14]="Kashish Salwar Kameez";
ar[15]="BIBA Salwar Kameez";
ar[16]="Life Denim Shorts for Ladies";
ar[17]="Gini & Jony Top for girls";
ar[18]="Gini & Jony Dresses for girls";
ar[19]="Stop Girl Casual Dresses for girls";
ar[20]="Denim Shorts for girls below 7";
ar[21]="Tantra T-shirts for boys below 10";
ar[22]="Giny & Jony kids Shirt";
ar[23]="Giny & Jony Kids Jeans[boys]";
ar[24]="Giny & Jony Kids Jeans[girls]";
ar[25]="Socks for kids";
aa[0]=1599;
aa[1]=1499;
aa[2]=1399;
aa[3]=1499;
aa[4]=1499;
aa[5]=1595;
aa[6]=1695;
aa[7]=999;
aa[8]=999;
aa[9]=899;
aa[10]=699;
aa[11]=799;
aa[12]=999;
aa[13]=2395;
aa[14]=2295;
aa[15]=2295;
aa[16]=799;
aa[17]=599;
aa[18]=899;
aa[19]=549;
aa[20]=599;
aa[21]=225;
aa[22]=799;
aa[23]=999;
aa[24]=999;
aa[25]=135;
for(int r=0;r<=25;r++)
{
System.out.println((r+1)+"\t\t"+ar[r]+"\t\t\t\t\t"+aa[r]);
}
System.out.println("CHOOSE THE ITEM YOU WANT TO BUY FROM THE ABOVE ITEMS");
String see=buf.readLine();
int x=Integer.parseInt(see);
if(x==1)
tot+=aa[0];
else if(x==2)
tot+=aa[1];
else if(x==3)
tot+=aa[2];
else if(x==4)
tot+=aa[3];
else if(x==5)
tot+=aa[4];
else if(x==6)
tot+=aa[5];
else if(x==7)
tot+=aa[6];
else if(x==8)
tot+=aa[7];
else if(x==9)
tot+=aa[8];
else if(x==10)
tot+=aa[9];
else if(x==11)
tot+=aa[10];
else if(x==12)
tot+=aa[11];
else if(x==13)
tot+=aa[12];
else if(x==14)
tot+=aa[13];
else if(x==15)
tot+=aa[14];
else if(x==16)
tot+=aa[15];
else if(x==17)
tot+=aa[16];
else if(x==18)
tot+=aa[17];
else if(x==19)
tot+=aa[18];
else if(x==20)
tot+=aa[19];
else if(x==21)
tot+=aa[20];
else if(x==22)
tot+=aa[21];
else if(x==23)
tot+=aa[22];
else if(x==24)
tot+=aa[23];
else if(x==25)
tot+=aa[24];
else
tot+=aa[25];
System.out.println("Would you like to but anything else from this section");
String ss=buf.readLine();
if(ss.equalsIgnoreCase("Yes")==true)
continue;
else
break;
}
if(b==2)
{
System.out.println("Sr no"+"\t\t"+"ITEM"+"\t\t\t\t\t"+"PRICE");
ag[0]="1kg Potatoes";
ag[1]="1kg Tomatoes";
ag[2]="1kg Onion";
ag[3]="1kg Apples";
ag[4]="1kg Cabbage";
ag[5]="1kg Cauliflower";
ag[6]="1dozen Bannanas";
ag[7]="1dozen Chikoos";
ag[8]="1kg Watermelon";
ag[9]="1kg Strawberries";
ag[10]="1kg Sugar";
ag[11]="1kg Red Label Tea";
ag[12]="1kg Tata Salt";
ag[13]="5 Lemons";
ag[14]="1kg Rice";
ag[15]="1kg Wheat";
gg[0]=15;
gg[1]=20;
gg[2]=30;
gg[3]=80;
gg[4]=20;
gg[5]=40;
gg[6]=40;
gg[7]=60;
gg[8]=65;
gg[9]=150;
gg[10]=30;
gg[11]=200;
gg[12]=10;
gg[13]=10;
gg[14]=40;
gg[15]=25;
for(int q=0;q<=15;q++)
{
System.out.println((q+1)+"\t\t"+ag[q]+"\t\t\t\t\t"+gg[q]);
}
System.out.println("CHOOSE THE ITEM YOU WANT TO BUY FROM THE ABOVE ITEMS");
String go=buf.readLine();
int y=Integer.parseInt(go);
if(y==1)
tot+=gg[0];
else if(y==2)
tot+=gg[1];
else if(y==3)
tot+=gg[2];
else if(y==4)
tot+=gg[3];
else if(y==5)
tot+=gg[4];
else if(y==6)
tot+=gg[5];
else if(y==7)
tot+=gg[6];
else if(y==8)
tot+=gg[7];
else if(y==9)
tot+=gg[8];
else if(y==10)
tot+=gg[9];
else if(y==11)
tot+=gg[10];
else if(y==12)
tot+=gg[11];
else if(y==13)
tot+=gg[12];
else if(y==14)
tot+=gg[13];
else if(y==15)
tot+=gg[14];
else
tot+=gg[15];
System.out.println("Would you like to but anything else from this section");
String xx=buf.readLine();
if(xx.equalsIgnoreCase("Yes")==true)
continue;
else
break;
}
if(b==3)
{
System.out.println("Sr no"+"\t\t"+"ITEM"+"\t\t\t\t\t"+"PRICE");
at[0]="Pani Puri";
at[1]="Sev Puri";
at[2]="Ragda Puri";
at[3]="Club sandwich";
at[4]="Basket Chaat";
at[5]="Pav Bhaji";
at[6]="Plain Dosa";
at[7]="Masala Dosa";
at[8]="Idli Chatni";
at[9]="Veg Pizza";
at[10]="Veg Burger";
tt[0]=25;
tt[1]=25;
tt[2]=30;
tt[3]=20;
tt[4]=45;
tt[5]=60;
tt[6]=75;
tt[7]=95;
tt[8]=80;
tt[9]=125;
tt[10]=25;
for(int u=0;u<=10;u++)
{
System.out.println((u+1)+"\t\t"+at[u]+"\t\t\t\t\t"+tt[u]);
}
System.out.println("CHOOSE THE ITEM YOU WANT TO BUY FROM THE ABOVE ITEMS");
String ew=buf.readLine();
int w=Integer.parseInt(ew);
if(w==1)
tot+=tt[0];
else if(w==2)
tot+=tt[1];
else if(w==3)
tot+=tt[2];
else if(w==4)
tot+=tt[3];
else if(w==5)
tot+=tt[4];
else if(w==6)
tot+=tt[5];
else if(w==7)
tot+=tt[6];
else if(w==8)
tot+=tt[7];
else if(w==9)
tot+=tt[8];
else if(w==10)
tot+=tt[9];
else
tot+=tt[10];
System.out.println("Would you like to but anything else from this section");
String kk=buf.readLine();
if(kk.equalsIgnoreCase("Yes")==true)
continue;
else
break;
}
if(b==4)
{
System.out.println("Sr no"+"\t\t"+"ITEM"+"\t\t\t\t\t"+"PRICE");
ac[0]="Navneet A4 size notebooks(200 pgs)";
ac[1]="Navneet fullscape notebooks(200 pgs)";
ac[2]="Navneet Journals(200 pgs)";
ac[3]="Navneet small square maths notebook(200 pgs)";
ac[4]="Reynolds pen";
ac[5]="Add Gel pen";
ac[6]="Journal Sheets(1 dozen)";
ac[7]="Graph Paper(1 dozen)";
ac[8]="400 pages Diary";
ac[9]="Apsara Pencil Box";
ac[10]="Geometry Box";
cc[0]=15;
cc[1]=25;
cc[2]=49;
cc[3]=25;
cc[4]=15;
cc[5]=10;
cc[6]=6;
cc[7]=6;
cc[8]=75;
cc[9]=25;
cc[10]=120;
for(int n=0;n<=10;n++)
{
System.out.println((n+1)+"\t\t"+ac[n]+"\t\t\t\t\t"+cc[n]);
}
System.out.println("CHOOSE THE ITEM YOU WANT TO BUY FROM THE ABOVE ITEMS");
String es=buf.readLine();
int bo=Integer.parseInt(es);
if(bo==1)
tot+=cc[0];
else if(bo==2)
tot+=cc[1];
else if(bo==3)
tot+=cc[2];
else if(bo==4)
tot+=cc[3];
else if(bo==5)
tot+=cc[4];
else if(bo==6)
tot+=cc[5];
else if(bo==7)
tot+=cc[6];
else if(bo==8)
tot+=cc[7];
else if(bo==9)
tot+=cc[8];
else if(bo==10)
tot+=cc[9];
else
tot+=cc[10];
System.out.println("Would you like to but anything else from this section");
String jj=buf.readLine();
if(jj.equalsIgnoreCase("Yes")==true)
continue;
else
break;
}
System.out.println("Would you like to go to any other section");
String ss=buf.readLine();
if(ss.equalsIgnoreCase("Yes")==true)
continue;
else
break;

Array indexes in Java is zero based. So if you declare a array of size 25. You can use only 0-24 element. There is no 25th index. 25th element present in 24th index.

And i suggest you to modify the code littler bit.

Regards
Dheeraj Joshi