# compile error, really don't know why

• I met the compile error all the time and I really dont know why.

Here is my code

public class solution {
public int countDigitOne(int n) {
int result = 0;
String everyDigit = new String();

``````	//to be more convenient, I added an extra 0 before and after all digits.
everyDigit = '0' + String.valueOf(n) + '0';

//if n is less than or equal to 0, the number of digit 1 is 0.
if(n <= 0) {
return 0;
}
//if n is bigger than 0
for(int i = 1; i < everyDigit.length() - 1; i++) {
if((int)(everyDigit.charAt(i)-48) > 1) {
result = (int) (result + (Integer.valueOf(everyDigit.substring(0, i))+1) * Math.pow(10, everyDigit.length()-i-2));
}
else if((int)(everyDigit.charAt(i)-48) == 1) {
if(i == everyDigit.length()-2) {
result = (int) (result + (Integer.valueOf(everyDigit.substring(0, i))) * Math.pow(10, everyDigit.length()-i-2) + 1);
}
else {
result = (int) (result + (Integer.valueOf(everyDigit.substring(0, i))) * Math.pow(10, everyDigit.length()-i-2)
+ Integer.valueOf(everyDigit.substring(i+1, everyDigit.length()-1)) + 1);
}
}
else if((int)(everyDigit.charAt(i)-48) < 1) {
result = (int) (result + (Integer.valueOf(everyDigit.substring(0, i))) * Math.pow(10, everyDigit.length()-i-2));
}
}
return result;
}
``````

}

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