How does Java swing place a button anywhere in the popup box? (Use of Absolute layout layouts)

Get ready:

Absolute layout absolute layouts, where controls can be placed anywhere in an absolute layout

How do I make a pop-up box like the one below?

--------------------------------------------

Create a new pop-up box, then select Getcontentpane (), and then set the shrimp's layout property to Absolute layout.

Then drag JButton from the left to the pop-up box on the right, and you'll find that JButton can be placed anywhere you want.

Homework:

1. Make one of the following pop-up boxes

The upper-left and lower-right corners are a jtextarea, respectively, A and B, the middle is a JButton

Requirements:

1. After entering the text in B, click on the button text to appear in a, and also in the console output B text, and finally empty the input in B

2. When there is too much content in a or B, you can scroll to see what is not displayed

How does Java swing place a button anywhere in the popup box? (Use of Absolute layout layouts)