java tells that can not find symbol -

i studying core java myself. wrote java program, , got 1 error:

...cannot find symbol "refc"

but is declared object reference... can explain that?

import java.io.*;  class contactmain {     int count = 0;     int[] = new int[5];      contactmain() {         system.out.println("a");         a[count] = count+1;         count++;     } }  class contact {      public static void main(string args[]) {          int y = 0;         int = 0;         while (i<10) {             contactmain refc = new contactmain();//create instance of class             i++;         }         system.out.println(refc.a[i]);     } } 

in last statement, got error {refc.a[i]} cannot find symbol. please, me.

scope matters, you're declaring variable inside while(..){ } , trying access outside of loop, change code to:

while(i<10) {    contactmain refc=new contactmain();    i++;    system.out.println(refc.a[i]); }