java list的六种赋值方式

public static void main(String[] args) {
    //第一种赋值
    List<String> list1 = Arrays.asList("string1","string2","string3");
    //第二种赋值
    List<String> list2 = new ArrayList<>();
    list2.add("string4");
    list2.add("string5");
    list2.add("string6");
    //第三种赋值
    list2.addAll(list1);
    //第四种赋值
    List<String> list3 = new ArrayList<>();
    Collections.addAll(list3, "string7","string8","string9");
    //第五种赋值
    List<String> list4 = new ArrayList<String>(){{
        add("string10");
        add("string11");
        add("string12");
        //第六种赋值
        addAll(list1);
    }};
    System.out.println(list1);
    System.out.println(list2);
    System.out.println(list3);
    System.out.println(list4);
}

/*output
[string1, string2, string3]
[string4, string5, string6, string1, string2, string3]
[string7, string8, string9]
[string10, string11, string12, string1, string2, string3]
*/