JAVA programming

Please answer all questions

1. Explain the operation of the code below private void updateDisplay () int hourhours.getValue) String suffix = "an"; if (hour12) houhour 12; suffix - "pm"; if (hour-0) { hour = 12; displays tring= hour + "." + minutes.getDisplayValue () + suffix; 2. Write a Java statements that define a variable named window of type Rectangle, and then create a Rectangle object and assign it to that variable. The Rectangle constructor has two int parameters 3. If a collection stores 10 objects, what value would be returned from a call to its size method? 4. What is the index of the last item stored in a collection of 15 objects? 5. Suppose that an object is stored at index 6 in a collection. What will be its index after the objects at index 0 and index 9 are removed