Не могу понять почему не выполняется первое требование при валидации
package en.javarush.task.pro.task09.task0906;
/*
Binary converter
*/
public class Solution {
public static void main(String[] args) {
int decimalNumber = Integer.MAX_VALUE;
System.out.println("Decimal number " + decimalNumber + " is equal to binary number " + toBinary(decimalNumber));
String binaryNumber = "1111111111111111111111111111111";
System.out.println("Binary number " + binaryNumber + " is equal to decimal number " + toDecimal(binaryNumber));
}
public static String toBinary(int decimalNumber) {
String result= "";
if (decimalNumber > 0 ) {
for (int i = 0; ; i++) {
result = (decimalNumber % 2) + result;
decimalNumber = decimalNumber / 2;
if (decimalNumber <= 0)
break;
}
return result;
}else {
return null;
}
}
public static int toDecimal(String binaryNumber) {
if (binaryNumber != null) {
char[] strToArray = binaryNumber.toCharArray();
int result = 0;
for (int i = 0, j = strToArray.length - 1; i < strToArray.length; i++, j--) {
int degreeNumber = (int) Math.round(Math.pow(2, i));
int temp;
if (strToArray[j] == '1') {
temp = 1;
} else {
temp = 0;
}
result = result + temp * degreeNumber;
}
return result;
}else {
return 0;
}
}
}