Java – when using “. Get (0)” in an empty list, I get an out of bounds exception instead of null?

So in my homework, for my error checking test, I made a list < someobject > and I got an indexoutofboundsexception I passed the examination Isempty to solve it, but I wonder why not:

boolean b = myList.Get(0) != null;

Work?

When I debug the application and look at mylist, I see nine null entries I can see that its size is 0, so why is this possible? Its size is 0, so it doesn't exist when I try to get an entry?

Solution

If Java:

ArrayList<Object> list = new ArrayList<Object>();
list.get(0);

Will trigger

Exception in thread "main" java.lang.indexoutofboundsexception: Index: 0,Size: 0
    at java.util.ArrayList.RangeCheck(ArrayList.java:547)
    at java.util.ArrayList.get(ArrayList.java:322)
    at HelloWorldTester.main(HelloWorldTester.java:7)

The reason is actually the source code Rangecheck may be checking that what you want is less than the size of the list If it's higher then

throw new indexoutofboundsexception();