String to Int

public static int stringToInt(String str){
    int i=0;
    int number=0;
    boolean neg=false;
    char[] strA=str.toCharArray();
    int length=strA.length;

    /* determine if the number is negative */
    if (strA[0]=='-'){
        neg=true;
        i++;
    }

    /* computing number using Horner's Rule */
    while(i<length){
        number*=10;
        number+=strA[i]-'0';
        i++;
    }

    /* add the sign for a negative number */
    if (neg) number*=-1;

    return number;
}