Question

private int Index(String[] match,String keyword){
   int m=0;
   keyword=keyword+"1";
   match[m]=match[m]+"1";
   System.out.println("match:"+match[m]);
   System.out.println("keyword:"+keyword);
   System.out.println(match[m].equals(keyword));
   while(!(match[m].equals("")) && !(match[m].equals(null))){
           System.out.println("yes");
       if(match[m].equals(keyword)){
         break;
       }
       else
           m++;
   }
   return m;
}

And I am getting following output (value of keyword is sparktg):

match:sparktg
1
keyword:sparktg1
false

Why in the case of match[m], there is a new line between “sparktg” & “1”?

Answer 1

If you have no control over the input, you can do a trim() before you use the inputs. This eliminates any \n and spaces.

if(match[m] != null) {
   System.out.println("match:"+match[m].trim());
}
if(keyword != null) {
   System.out.println("keyword:"+keyword.trim());
}

You can make it cleaner by writing a utility method to do this.

public String sanitize(String input) {
    return input != null ? input.trim() : null;
}

and use it as so:

match[m] = sanitize(match[m]);
keyword = sanitize(keyword);