android pickFirst的示例代码有哪些

从List中获取第一个元素：

List<String> list = new ArrayList<>();list.add("A");list.add("B");list.add("C");String firstElement = list.get(0);System.out.println("First element: " + firstElement);

String[] array = {"A", "B", "C"};String firstElement = array[0];System.out.println("First element: " + firstElement);

List<String> list = new ArrayList<>();list.add("A");list.add("B");list.add("C");Iterator<String> iterator = list.iterator();String firstElement = iterator.next();System.out.println("First element: " + firstElement);