java 可变参数 常用静态

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"); //UnsupportedOperationExceptionlist.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");//UnsupportedOperationExceptionlist.remove("java");//UnsupportedOperationExceptionlist.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"); //IllegalArgumentExceptionSet<String> set = Set.of("hello", "world", "java");//        set.add("javaee");//UnsupportedOperationException
//        set.remove("world");//UnsupportedOperationExceptionSystem.out.println(set);}
}