$3)$Please complete these $2$ tasks in JAVA $-$ Having a hard time with getting number $2$

Create an application called JFacts with a JFrame and at least six labels that contain facts about your favorite topic$$for example, the French Revolution or astronomy. Every time the user clicks a JButton, remove one of the labels and add a different one.

An example of the program is shown below:

Task $1$: Created the JFacts class.

Task $2$: The JFacts program changes the displayed JLabel component when a button is clicked