I get an java.lang.IndexOutOfBoundsException for this code.
private List<Integer> LoeschenX = new ArrayList<Integer>();
private List<Integer> LoeschenY = new ArrayList<Integer>();
for (int i : LoeschenY) LoeschenX.add(LoeschenY.get(i));
When you do
for (int i : LoeschenY)
you are looping over the elements of LoeschenY
, not on indexes. You may want to iterate over indexes so you can use get(i)
:
for (int i = 0; i < LoeschenY.size(); i++)
LoeschenX.add(LoeschenY.get(i));
Remember that get(index)
will return the value in an specific index.
Edit: You can also try
for (int i : LoeschenY)
LoeschenX.add(i);
since i
takes the values of the elements of LoeschenY
, you will add these values to LoeschenX
.
You seem to be iterating over the elements in the Y array, but the get
method actually uses the element as an index the way you're doing it.
Try
for(int i : LoeschenY)
LoeschenX.add(i);
Or
for(int i = 0; i < LoeschenY.size(); i++)
LoeschenX.add(LoeschenY.get(i));
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