java

You have a Phone that has a powerOn(Date startTime) method, a placeCall(String number) method, a powerOff() method, and in isOn() method. Use the command pattern to create two types of command objects. The first one places a call by: a. Checking if the phone is on and, if it is not, turning it on and passing in the current time as the startTime b. Placing a call to a number that was passed in to the constructor The second command object powers off the phone. Now show how an array of Command objects could be constructed so that looping through it and using the same method on each object will place 4 calls in a row and then power off the phone