Query about the trim() method in Java

Question

I asked a question earlier but met harsh criticism, so here I pose it again. Simpler, and rephrased to appeal to those who may have been concerned about the way I asked it befor

Answer 1

There must be a non-whitespace character in the source string. Add the following to your code and see what it prints.

for (char ch : someString.toCharArray()) {
     System.out.print(Integer.toHexString(ch) + " ");
}