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

We can use iterator for the same to remove all the null values.

Iterator itr= tourists.iterator();
while(itr.hasNext()){
    if(itr.next() == null){
        itr.remove();
    }
}