Making Rectangles - Intro to Java ProgrammingYouTube↗  IA↗(long shot)
Education  5.1K views 9 likes 4 dislikes   23 Feb 2015
Udacity 651K subscribers United States YouTube↗


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Because this project has multiple classes, I have to select the one that I
Bởi vì project này có nhiều class, Tôi phải chọn 1 cái mà tôi muốn.
want. And now, I can scroll through in the usual way and see the methods of the
Và giờ, tôi có thể lướt qua như bình thường và tôi thấy các methods của retangle class.
rectangle class. But I want to go a little bit above that and here you see a
Nhưng tôi muốn lên trên đó một tí và ở đây bạn thấy
summary of the constructors. There are two constructors, the first one takes no
một phần tổng hợp của các constructors. Có 2 constructors, cái đầu tiên
arguments and constructs an empty rectangle. The second one takes four
không có tham số và nó tạo một hình chữ nhật rỗng. Cái thứ hai có 4 tham số.
arguments. And I can click on it, and I get the detailed description of what
Và tôi có thể click vào nó, và tôi có mô tả chi tiết về
each of the arguments are. To construct objects in a Java program, you also use
mỗi tham số là gì. Để tạo một object trong Java, bạn cũng sử dụng
the new syntax. Let's have a look. Over here, you see a variable whose name is
cú pháp mới. Hãy xem nào. Ở đây, bạn thấy một biến với tên là box,
box, whose type is rectangle. And the keyword new tells us to make a new
kiểu là rectangle. Và từ khóa "new" cho ta biết là để tạo một
rectangle with these values for the construction. Now you know all the details
hình chữ nhật mới với các giá trị này khi khởi tạo. Bây giờ bạn đã biết tất cả chi tiết
about construcitng objects.
về việc tạo các object.
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