detect last foreach loop iteration

Question

Supposing that I have some foreach loop like this:

Set<String> names = new HashSet<>(); //some code for (String name: names) {      //some code } 

Is there a way to check inside foreach that the actual name is the last one in Set without a counter? I didn't found here some question like this.

Answer 1

For simplicity and understandability, imo, would do:

Set<String> names = new HashSet<>(); Iterator<String> iterator = names.iterator();     while (iterator.hasNext()) {         String name = iterator.next();         //Do stuff         if (!iterator.hasNext()) {             //last name          }      } 

Also, it depends on what you're trying to achieve. Let's say you are implementing the common use case of separating each name by coma, but not add an empty coma at the end:

Set<String> names = new HashSet<>(); names.add("Joao"); names.add("Pereira");  //if the result should be Joao, Pereira then something like this may work String result = names.stream().collect(Collectors.joining(", ")); 

Answer 2

Other answears are completely adequate, just adding this solution for the given question.

Set<String> names = new HashSet<>();     //some code    int i = 0;  for (String name: names) {     if(i++ == names.size() - 1){         // Last iteration     }    //some code  }