Create a class that extends JPanel and whose constructor accepts two colors, a Font, and a String. Use the colors for the background and foreground of the panel and display the string using the font...

Create a class that extends JPanel and whose constructor accepts two colors, a Font,

and a String. Use the colors for the background and foreground of the panel and

display the string using the font parameter. Create an application named JPanelDemo.

Use GridLayout to display four sample panels. Save the files as JFlexiblePanel.java

and JPanelDemo.java.