package fanxing;
import java.util.Arrays;
import java.util.List;
import java.util.Set;
public class kebian2 {
public static void main(String[] args) {
//public static <T> List<T> asList(T... a):返回由指定数组支持的固定大小的列表
// List<String> list = Arrays.asList("hello", "world", "java");
//
list.add("javaee"); //UnsupportedOperationException
list.remove("world"); //UnsupportedOperationException
// list.set(1,"javaee");
//
// System.out.println(list);
//public static <E> List<E> of(E... elements):返回包含任意数量元素的不可变列表
// List<String> list = List.of("hello", "world", "java", "world");
//
list.add("javaee");//UnsupportedOperationException
list.remove("java");//UnsupportedOperationException
list.set(1,"javaee");//UnsupportedOperationException
//
// System.out.println(list);
//public static <E> Set<E> of(E... elements) :返回一个包含任意数量元素的不可变集合
// Set<String> set = Set.of("hello", "world", "java","world"); //IllegalArgumentException
Set<String> set = Set.of("hello", "world", "java");
// set.add("javaee");//UnsupportedOperationException
// set.remove("world");//UnsupportedOperationException
System.out.println(set);
}
}
java 可变参数 常用静态
猜你喜欢
转载自blog.csdn.net/qq_34608447/article/details/114005429
今日推荐
周排行