Como funciona el Trim()

[Fonchero]

Asi funciona el trim

public String trim () {
int start = offset, last = offset + count - 1;
int end = last;
while ((start <= end) && (value [start] <= ' ')) start++;
while ((end >= start) && (value [end] <= ' ')) end--;
if (start == offset && end == last) return this;
return new String (start, end - start + 1, value);
}