//simple example creating a list form a string array

String[] myStrings = new String[] {"Elem1","Elem2","Elem3","Elem4","Elem5"};

List mylist = Arrays.asList(myStrings );

//getting an iterator object to browse list items

Iterator itr= mylist.iterator();

System.out.println("Displaying List Elements,");

while(itr.hasNext())

  System.out.println(itr.next());

List arrList = new ArrayList();

最好按照下面的建议使用泛型:

List<String> arrList = new ArrayList<String>();

arrList.add("one");

如果你使用LinkedList。

List<String> lnkList = new LinkedList<String>();

在Java 8中

创建一个固定大小的非空列表(不支持添加、删除等操作):

List<Integer> list = Arrays.asList(1, 2); // but, list.set(...) is supported

创建一个非空的可变列表:

List<Integer> list = new ArrayList<>(Arrays.asList(3, 4));

在Java 9中

使用一个新的List.of(…)静态工厂方法:

List<Integer> immutableList = List.of(1, 2);

List<Integer> mutableList = new ArrayList<>(List.of(3, 4));

在Java 10中

使用局部变量类型推断:

var list1 = List.of(1, 2);

var list2 = new ArrayList<>(List.of(3, 4));

var list3 = new ArrayList<String>();

并遵循最佳实践……

不要使用原始类型

从Java 5开始，泛型就成为了语言的一部分——你应该使用它们:

List<String> list = new ArrayList<>(); // Good, List of String

List list = new ArrayList(); // Bad, don't do that!

编程到接口

例如，编程到List接口:

List<Double> list = new ArrayList<>();

而不是:

ArrayList<Double> list = new ArrayList<>(); // This is a bad idea!

在Java 9中，你可以执行以下操作来创建一个不可变的List:

List<Integer> immutableList = List.of(1, 2, 3, 4, 5);

List<Integer> mutableList = new ArrayList<>(immutableList);

试试这个:

List<String> messages = Arrays.asList("bla1", "bla2", "bla3");

Or:

List<String> list1 = Lists.mutable.empty(); // Empty
List<String> list2 = Lists.mutable.of("One", "Two", "Three");

//simple example creating a list form a string array

String[] myStrings = new String[] {"Elem1","Elem2","Elem3","Elem4","Elem5"};

List mylist = Arrays.asList(myStrings );

//getting an iterator object to browse list items

Iterator itr= mylist.iterator();

System.out.println("Displaying List Elements,");

while(itr.hasNext())

  System.out.println(itr.next());