Vector was part of 1.0 -- the original implementation had two drawbacks: 1. Naming: vectors are really just lists which can be accessed as arrays, so it should have been called ArrayList …

Jun 6, 2010 · Internally, both the ArrayList and Vector hold onto their contents using an Array. When an element is inserted into an ArrayList or a Vector, the object will need to expand its …

May 18, 2011 · Is the following valid in Java: public Vector <Object> objVector = new Vector <Object>(50); I know by default the values are stored as objects, but I would like to know …

Write this kind of class in Java is horrible: Java generics sucks, and has no operator overloading. Even if you use the java way (no operators, "add" method and colleagues), the only way to …

Vector synchronizes all operations, which is a waste in 90+% of cases; if you want concurrent collections, Java 5 has introduced ConcurrentHashMap, CopyOnWriteArrayList etc, you …

Dec 29, 2009 · List list = new Vector(); or: List<String> list = new Vector<String>(); (assuming a Vector of Strings). If however you want to convert it to an ArrayList, which is the closest List …

Apr 2, 2016 · Vector<String> productList = new Vector<>(hm.keySet()); Second, you should prefer an ArrayList 1. List<String> productList = new ArrayList<>(hm.keySet()); 1 Unless …

Mar 27, 2011 · Vector was in Java 1.1, and since Java 1.4 the new Collection API has appeared, defining a general List interface with the function clear(). Use clear(), because it is the modern …

Sep 17, 2010 · No, LinkedList is the equivalent of std::list. The expectation of std::vector is that accessing by index is O(1) and LinkedList (and std::list) is O(n).

Jun 22, 2010 · As of the Java 2 platform v1.2, this class was retrofitted to implement the List interface, making it a member of the Java Collections Framework. List has an add method, so …