1. Write a program that contains a text field, a button "Add Value", and a component that draws a bar chart of the numbers that a user typed into the text field.
2. Write a program that draws a clock face with a time that the user enters in two text fields (one for the hours, one for the minutes).
3. Write an application with three buttons labeled "Red", "Green", and "Blue" that changes the background color of a panel in the center of the frame to red, green, or blue.