May 13, 2009 · List<String> list = new ArrayList<>(); This is how to create a LinkedList in java, If you need to do frequent insertion/deletion of elements on the list, you should use LinkedList instead of …

Nov 15, 2012 · List is an Interface, you cannot instantiate an Interface, because interface is a convention, what methods should have your classes. In order to instantiate, you need some …

Oct 5, 2017 · @Sandy Chapman: List.of does return some ImmutableList type, its actual name is just a non-public implementation detail. If it was public and someone cast it to List again, where was the …

Dec 4, 2009 · List is an interface you can implement yourself and also implemented by some of the Java collections, like Vector. You can provide compile-time typing information using the angled brackets.

Being somewhat new to the Java language I'm trying to familiarize myself with all the ways (or at least the non-pathological ones) that one might iterate through a list (or perhaps other collection...

Oct 10, 2008 · Avoid Apache Commons Collections. It’s not typesafe, there are no generics. Great if you use Java 1.4, but for Java 5 and above, I’d prefer Google Guava.

Jun 17, 2009 · List<String> places2 = Collections.singletonList("Buenos Aires"); This would mean that places2 is immutable (trying to change it in any way will cause an UnsupportedOperationException …

The notation List<?> means "a list of something (but I'm not saying what)". Since the code in test works for any kind of object in the list, this works as a formal method parameter. Using a type parameter …

Oct 30, 2012 · I have a List of object and the list is very big. The object is class Sample { String value1; String value2; String value3; String value4; String value5; } Now I have to searc...

I'm trying to read a CSV file into a list of lists (of strings), pass it around for getting some data from a database, build a new list of lists of new data, then pass that list of lists so it can be