java Programming Glossary: elementdata

Struts2: Updating the values of a “List Of Objects” inside a Map

http://stackoverflow.com/questions/15006868/struts2-updating-the-values-of-a-list-of-objects-inside-a-map

eclipse shows objA Object A id 955 objB ArrayList E id 966 elementData Object 10 id 967 0 ObjectB id 968 allPlainFields TreeMap K..

.toArray(new MyClass[0]) or .toArray(new MyClass[myList.size()])?

http://stackoverflow.com/questions/174093/toarraynew-myclass0-or-toarraynew-myclassmylist-size

of a's runtime type but my contents return T Arrays.copyOf elementData size a.getClass System.arraycopy elementData 0 a 0 size if a.length.. Arrays.copyOf elementData size a.getClass System.arraycopy elementData 0 a 0 size if a.length size a size null return a Use the first..

Time complexity for java ArrayList

http://stackoverflow.com/questions/2182597/time-complexity-for-java-arraylist

index public E get int index RangeCheck index return E elementData index Basically it just returns a value straight out of the..

How to effectively copy an array in java?

http://stackoverflow.com/questions/2589741/how-to-effectively-copy-an-array-in-java

How does Java's serialization work and when it should be used instead of some other persistence technique?

http://stackoverflow.com/questions/352117/how-does-javas-serialization-work-and-when-it-should-be-used-instead-of-some-ot

Object array inside Arraylist is called elementData field name elementData value One value value Two value value.. array inside Arraylist is called elementData field name elementData value One value value Two value value Three value field object.. that is . The same in JSON could be java.util.ArrayList elementData one two three which is 75 bytes so already slightly smaller..

Using collection size in for loop comparision

http://stackoverflow.com/questions/4438710/using-collection-size-in-for-loop-comparision

boolean add E e ensureCapacity size 1 Increments modCount elementData size e return true As you can see it just increases the size..

Does assigning objects to null in Java impact garbage collection?

http://stackoverflow.com/questions/449409/does-assigning-objects-to-null-in-java-impact-garbage-collection

E remove int index RangeCheck index modCount E oldValue E elementData index int numMoved size index 1 if numMoved 0 System.arraycopy.. int numMoved size index 1 if numMoved 0 System.arraycopy elementData index 1 elementData index numMoved elementData size null Let.. index 1 if numMoved 0 System.arraycopy elementData index 1 elementData index numMoved elementData size null Let gc do its work return..

list.clear() vs list = new ArrayList<Integer>();

http://stackoverflow.com/questions/6961356/list-clear-vs-list-new-arraylistinteger