How to get the last value of an ArrayList
The following is part of the List
interface (which ArrayList implements):
E e = list.get(list.size() - 1);
E
is the element type. If the list is empty, get
throws an IndexOutOfBoundsException
. You can find the whole API documentation here.
How to get last item in ArrayListString
stringArray.get(stringArray.size() - 1) ;
shoudl give u the last item in stringArray list
I always get the last value of an ArrayList
In your getParameters() function
Create an ArrayList like :
ArrayList<Integer> quantityArray = Parameters.getQuantityArray();
You can change your while loop like :
for (Integer i : quantityArray)
System.out.println(i);
It should work
Can't get last element in arrayList without knowing the length
It may be better to limit while
loop to reading the inputs and when user is done, print the list contents in any desired order.
Scanner imeskanera = new Scanner(System.in);
List<String> wordlist = new ArrayList<>();
String word;
System.out.println("Type a word: ");
while(!(word = imeskanera.nextLine()).isEmpty()) {
wordlist.add(word);
System.out.println("Type a word: ");
}
for (int i = wordlist.size(); i-- > 0;) { // index decremented in condition
System.out.println(wordlist.get(i));
}
Or ListIterator
may be retrieved using List::listIterator
and its methods hasPrevious()
/ previous()
can be used to iterate in reverse direction -- however, the size of list is needed anyway:
for (ListIterator i = wordlist.listIterator(wordlist.size()); i.hasPrevious();) {
System.out.println(i.previous());
}
How can I just get the last record in the java.util.List using subList() or any other method?
ArrayList.subList method returns a sublist of your list without modifying your existing list.
So you need to do;
list = list.subList(list.size()-1, list.size());
How to get the last value of an ArrayList in kotlin?
There's last()
method, created exactly for this purpose.
myList.last()
How to get last element in ArrayList using Retrofit
use it in onResponse
of retrofit call
call.enqueue(new Callback<List<Koor>>() {
@Override
public void onResponse(Call<List<Koor>> call, Response<List<Koor>> response)
{
koorArrayList = response.body();
Koor mKoor = koorArrayList.get(koorArrayList.size() - 1);
}
..............
in mKoor
you have last Koor object from Koor List
How to get all the values from ArrayListString (I'm only getting the last value )?
ArrayList<PieEntry> visitors = new ArrayList<>();
visitors.add(new PieEntry(n1, op));
Add ArrayList<PieEntry> visitors = new ArrayList<>();
top of the for loop.
ArrayList<PieEntry> visitors = new ArrayList<>();
for (int i = 0; i <= size-1; i++) {
//code goes here
visitors.add(new PieEntry(n1, op));
//code goes here
}
Get the current value of an ArrayList - Java
You want to use a variable for adding the value and then adding that to the list
double sum = 0;
for (int i = 0; i < list.size(); i++) {
sum += list.get(i);
list1.add(sum);
}
If you want the whole array then using a for each loop is better.
double sum = 0;
for (Double value: list) {
sum += value;
list1.add(sum);
}
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