how to initialize static ArrayList<myclass> in one line

Question

i have MyClass as

MyClass(String, String, int); 

i know about how to add to add to ArrayList in this way:

MyClass.name = "Name"; MyClass.address = "adress";adress MyClass.age = age; 

then add to arrayList like:

list.add(MyClass); 

but now i have many object MyClass in static form, i want to add

ArrayList<MyClass> list = new ArrayList<MyClass>({"Name","Address", age};.....); 

can i do like this. thank anyway

Answer 1

You can use double braces initialization: -

List<MyClass> list = new ArrayList<MyClass>() {     {         add(new MyClass("name", "address", 23));         add(new MyClass("name2", "address2", 45));     } }; 

As you can see that, inner braces is just like an initializer block, which is used to initialize the list in one go..

Also note the semi-colon at the end of your double-braces

Answer 2

You can do

List<MyClass> list = Arrays.asList(                          new MyClass("Name", "Address", age),                          // many more                      ); 

Note: this will create a list where you can't change its size.