Return 0 sized array rather than nulls

Using null return approach:

public String[] getStrings() {
 if( foo ) {
  return null;
 } else {
  return new String[] {"bar, "baz"};
 }
}

//Now using this functionString[] strings = getStrings();if (strings != null) { for (String s : strings) {  blah(s); }}

Using 0 sized array

public String[] getStrings() {
 if( foo ) {
  return new String[0];
 } else {
  return new String[] {"bar, "baz"};
 }
}

//Now using the function above
// the if block is not necessary anymore
String[] strings = getStrings();
for (String s : strings) {
 blah(s);
}

So its definitely worth using java feature of allowing 0 sized array.