leetcode length of the last word

Given a string s consists of upper/lower-case alphabets and empty space characters ' ', return the length of last word in the string.

If the last word does not exist, return 0.

Note: A word is defined as a character sequence consists of non-space characters only.

For example, 
Given s = "Hello World",
return 5.

package Leetcode;

public class LengthofLastWord {
    public int lengthOfLastWord(String s) {
        char [] chars=s.toCharArray();
        int length=0;
        for(int i=chars.length-1;i>0;i--){
            if(length==0){
                if(chars[i]==' '){
                    continue;
                }
                else{
                    length++;
                }
            }
            else{
                if(chars[i]==' '){
                    break;
                }
                else{
                    length++;
                }
            }
        }
        return length;
    }

}