How to remove all null elements from a ArrayList or String Array?

Question

I try with a loop like that

// ArrayList tourists

for (Tourist t : tourists) {
    if (t != null) {     
        t.setId(idForm); 
    }   
}

Answer 1

There is an easy way of removing all the null values from collection.You have to pass a collection containing null as a parameter to removeAll() method

List s1=new ArrayList();
s1.add(null);

yourCollection.removeAll(s1);