You can use Arrays.asList(): Type[] anArray = … ArrayList<Type> aList = new ArrayList<Type>(Arrays.asList(anArray)); or alternatively, Collections.addAll(): ArrayList<Type> aList = new ArrayList<Type>(); Collections.addAll(theList, anArray); Note that you aren’t technically assigning an array to a List (well, you can’t do that), but I think this is the end result you are looking for.
Then you need a ArrayList of ArrayLists: ArrayList<ArrayList<String>> nodes = new ArrayList<ArrayList<String>>(); ArrayList<String> nodeList = new ArrayList<String>(); nodes.add(nodeList); Note that NodeList has been changed to nodeList. In Java Naming Conventions variables start with a lower case. Classes start with an upper case.
Arrays are strongly typed, and work well as parameters. If you know the length of your collection and it is fixed, you should use an array. ArrayLists are not strongly typed, every Insertion or Retrial will need a cast to get back to your original type. If you need a method to take a list … Read more
Arrays are strongly typed, and work well as parameters. If you know the length of your collection and it is fixed, you should use an array. ArrayLists are not strongly typed, every Insertion or Retrial will need a cast to get back to your original type. If you need a method to take a list … Read more
The source code for clear(): public void clear() { modCount++; // Let gc do its work for (int i = 0; i < size; i++) elementData[i] = null; size = 0; } The source code for removeAll()(As defined in AbstractCollection): public boolean removeAll(Collection<?> c) { boolean modified = false; Iterator<?> e = iterator(); while (e.hasNext()) … Read more
Using Java-8 Collection#removeIf myList.removeIf(obj -> obj.id == 10); With Java-7 you’ll have to use iterator: for(Iterator<MyType> iterator = myList.iterator(); iterator.hasNext(); ) { if(iterator.next().id == 10) iterator.remove(); } Note that list iteration is necessary in any case. In Java-8 removeIf method it’s just performed internally.
Introduce a new class as below @XmlRootElement(name = “responseList”) public class ResposeList { private List<Object> list; public List<Object> getList() { return list; } public void setList(List<Object> list) { this.list = list; } } and set the list as below @GET @Path(“/get”) @Produces(MediaType.APPLICATION_XML) public ResposeList addObjects() { Book book = new Book(); book.setName(“Here is the Game”); … Read more
Not sure what you mean by “ArrayList of string arrays” If you have string array then check the below link Passing string array between android activities http://docs.oracle.com/javase/7/docs/api/java/util/ArrayList.html ArrayList implements Serializable You can use intents ArrayList<String> mylist = new ArrayList<String>(); Intent intent = new Intent(ActivityName.this, Second.class); intent.putStringArrayListExtra(“key”, mylist); startActivity(intent); To retrieve Intent i = getIntent(); ArrayList<String> … Read more
try this array_merge(array_diff($array1,$array2),array_diff($array2,$array1))
It would be better to use a java.util.Map to store the key and values instead of two ArrayList, like: Map<String, String> foods = new HashMap<String, String>(); // here key stores the food codes // and values are that which will be visible to the user in the drop-down foods.put(“man”, “mango”); foods.put(“app”, “apple”); foods.put(“gra”, “grapes”); // … Read more