The famous Fibonacci sequence is also a problem in java. Please write a multithreaded Java class. The user enters a number, which is the number of blocks. The coordinates of the upper right corner of the block are displayed as (x, y), the first squareis (0, 1), the second squareis (1, 1), the third squareis (0, 3), and the fourth squareis (2, 3). Your output must show the coordinates of all squares, and the length and width of the last square.

Create a child thread to calculate the length and width of the rectangle. The parent thread will calculate and output the coordinates of the upper left corner of each square. Because the parent thread needs the data information calculated by the child thread, it needs to let the parent thread wait for the child thread to complete. Output example:

Input: 3 Length: xx Width: xx square1: (0,1) square:2 (1,1) square3: (0,3)