java 如何比较Arraylist 和list 的值
arraylist 如何转变为list集合
比较:先排序,在比较
ArrayList<String> arrayList = new ArrayList<String>();
arrayList.add("foo");
arrayList.add("bar");
List<String> list = new ArrayList<String>();
list.add("bar");
list.add("foo");
Collections.sort(arrayList);
Collections.sort(list);
if(arrayList.equals(list)) {
System.out.println("ArrayList and List have the same elements");
} else {
System.out.println("ArrayList and List have different elements");
}
arraylist 如何转变为list集合
ArrayList<Integer> arrayList = new ArrayList<Integer>();
arrayList.add(1);
arrayList.add(2);
// Convert ArrayList to List using constructor
List<Integer> list1 = new ArrayList<Integer>(arrayList);
// Convert ArrayList to List using addAll() method
List<Integer> list2 = new ArrayList<Integer>();
list2.addAll(arrayList);
没看懂你的需求,ArrayList不就是List的子类吗