11A
In this problem you will be using the Data class from your textbook. Remember that the Data class contains methods to find the average or the largest value in any array of objects which implement the Measurable interface.
You are given a class, Tree. You will implement the Measurable interface in the Tree class. A Tree is measured by its height. Then complete the TreeRunner class to find the average height of the trees and the type of the tallest tree.
For the draft, implement the Measurable interface in the Tree class.
Although the Tree class will not change, you will need to paste it into the textarea for the final.
Remember that the return value of largest is a reference to a Measurable object. Using that reference, you can not get the type of the object because Measurable has no getType method. (Think cast)
11B
Modify the Item class from hw10B to implement the Comparable interface from the Java library. Do not write your own Comparable interface.
If you need a working version of the Item class, you can get it from the solutions.
Item are ordered first by price with the smallest coming first. If two Item have the same price, the Item are ordered alphabetically by name in lexicographical order. If this Item should come before the other Item, compareTo returns a negative integer. If this Item should come after the other Item, it returns a positive integer. Otherwise, it returns 0.
For the final version, remember about using Double.compare to compare doubles.
Note: The compareTo method takes an Object as parameter not a Item (That means you will have to cast in the final)
For the draft, add the "implements Comparable" clause to the Item class header and implement compareTo as a stub. The header is:
public int compareTo(Object otherObject)
Note: You may get a compiler warning about "unsafe or unchecked operations" when you compile ItemRunner. You can safely ignore it for now.
11C
Write a class to model a television set. A TV has a constructor that takes the brand as a String. It also takes double , size, which is the screen size. Call the instance variables brand and size. The size is measured on the diagonal.
TV implements the the Comparable interface from the Java library. Do not write your own. TVs are ordered by size. If two TVs have the same size, then the TV with the brand that comes first in the lexicographical (alphabetical) order is the smaller. For Example, "LG" comes before "Sharp" alphabetically and so is the smaller if both have the same screen size.
TV has methods getSize() and getBrand().
A toString method is provided for you. Do not remove it. It is to help me in testing your code.
Provide Javadoc.
Remember that the compareTo method take a Object as parameter not a TV (That means you will have to cast)
For the draft, supply the instance variables, the constructor and the getSize()and getBrand() methods.