Problem 4. (10 points) Goal: Practice how to create user-defined classes in Java. A microwave control panel has five buttons: 1) one for increasing the time by 30 seconds, 2) one for switching between power levels, Low, Medium, and High, 3) a stop button, 4) a reset button, and 5) a start button. Implement a class that simulates the microwave, with a method for each button. The method for start button should print a message Cooking for ... seconds at level ... and changes the current status of the microwave. The method for stop button should print a message Cooking stopped. and changes the current status of the microwave. Based on the above description, you must figure out the required properties of the microwave control panel. At the end, write a separate Java program as the tester to test your microwave class with different values. Note*: There is no graphical task in this problem. Java file names: Microwave.java and TestMicrowave.java