convert list to arraylist

Detailed description of the ArrayList class in Java and detailed description of javaarraylist 1. What is ArrayList?ArrayList is the legendary dynamic Array. In MSDN, It is the complex version of Array. It provides the following benefits:Dynamically

The 1th part ArrayList introductionArrayList is an array queue, which is the equivalent of a dynamic array. Its capacity can grow dynamically compared to an array in Java. It inherits from Abstractlist, implements the list, randomaccess, cloneable,

The system. Collections namespace contains interfaces and classes that define a set of objects (such as lists, queues, bit arrays, hash tables, and dictionaries.System. collections. the generic namespace contains interfaces and classes that define a

Considerations for using the set: 1,Objects can only be referenced in a set, and Native data types cannot be placed., We need to use native data type packaging classes to add them to the Set (jdk5 will automatically perform the packing and unpacking

1. What is ArrayListArrayList is the legendary dynamic array, which, in MSDN parlance, is a complex version of array that provides some of the following benefits:Dynamic increase and decrease of elementsImplements the ICollection and IList

Use of ArrayList classes in Java 1, what is ArrayList ArrayList is the legendary dynamic array, which, in MSDN, is a complex version of array that provides some of the following benefits:Dynamic addition and reduction of elementsImplements the

Performance comparisons for List and ArrayList In the process of using non-generic collections such as ArrayList, boxing and unboxing operations can have significant performance losses, and there is no such problem with generic collections.

For example: The Code is as follows:String [] S = new string [3];// Assign a valueS [0] = "";S [1] = "B ";S [2] = "C ";// ModifyS [1] = "B1 "; However, arrays also have some shortcomings. For example, it is difficult to insert data between two data

[Reference Bobwei's blog:https://www.cnblogs.com/BObwei/p/4869157.html]In C #, Arraylist,list can store a set of objects, so what is the difference between these three?ArrayArrays are the first to appear in C #. It is continuously stored in memory,

In C #, when we want to store a group of objects, we will think of using arrays, ArrayList, and List. So what are the differences between the three? Let's take a look at the array first, because the array first appeared in C. Array Arrays have many