use the design pattern for collecting objects. We are going to model a Orchard with trees. An Orchard uses an ArrayList to keep track of Tree objects. You will write both a Orchard class and a Tree class. A Tree has a type and a height. Provide a constructor that takes type and height, in that order. Provide getters and setters for the instance variables. This is the design pattern for managing properties of objects. An Orchard has a constructor that takes no parameters. Remember it must initialize the instance variable. It also has methods○ add() Adds the specified Tree to the Orchard○ tallest() Gets the type of the tallest Tree in the Orchard or null if the Orchard is empty. Initialize the tallest with the first element.○ contains() determines if a Tree of the given type is in the Orchard. Returns true if a Tree of the given type is in the Orchard. Otherwise false.○ treeList() gets an ArrayList<String> containing the types of all the Trees in the Orchard Provide Javadoc for both classes. OrchardTester.javaimport java.util.ArrayList;/*** Tester for Orchard* /public class OrchardTester{public static void main(String[] args){Orchard trees = new Orchard();trees.add(new Tree("lemon",12.5 ));trees.add (new Tree("apple", 20.0));trees.add(new Tree ("cherry", 13.5));trees.add (new Tree("avocado", 35.0));trees.add(new Tree ("apricot", 17));%3DSystem.out.println(trees.treeList());System.out. println("Expected: [lemon, apple, cherry, avocado, apricot]" );System.out.println(trees.tallest());System.out.println("Expected: avocado");System.out.println(trees.contains( "cherry"));System.out.println("Expected: true");System.out.println(trees.contains ( "peach"));System.out.println( "Expected: false");trees = new Orchard();trees.add(new Tree("lemon",12.5 ));trees.add (new Tree("apple", 20.0));trees.add (new Tree("cherry", 13.5));;trees.add(new Tree("apricot", 17));%3D%3DSystem.out.println(trees.treeList ());System.out.println("Expected: [lemon, apple, cherry, apricot]");System.out. println(trees.tallest() );System.out.println("Expected: apple");

Actually, java is a object oriented programming language. It is a platform independent.

Answered: use the design pattern for collecting…

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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use the design pattern for collecting objects. We are going to model a Orchard with trees. An Orchard uses an ArrayList to keep track of Tree objects. You will write both a Orchard class and a Tree class.

A Tree has a type and a height. Provide a constructor that takes type and height, in that order. Provide getters and setters for the instance variables. This is the design pattern for managing properties of objects.
An Orchard has a constructor that takes no parameters. Remember it must initialize the instance variable. It also has methods

○ add() Adds the specified Tree to the Orchard

○ tallest() Gets the type of the tallest Tree in the Orchard or null if the Orchard is empty. Initialize the tallest with the first element.

○ contains() determines if a Tree of the given type is in the Orchard. Returns true if a Tree of the given type is in the Orchard. Otherwise false.

○ treeList() gets an ArrayList<String> containing the types of all the Trees in the Orchard

Provide Javadoc for both classes.

OrchardTester.java
import java.util.ArrayList;
/**
* Tester for Orchard
* /
public class OrchardTester
{
public static void main(String[] args)
{
Orchard trees = new Orchard();
trees.add(new Tree("lemon",12.5 ));
trees.add (new Tree("apple", 20.0));
trees.add(new Tree ("cherry", 13.5));
trees.add (new Tree("avocado", 35.0));
trees.add(new Tree ("apricot", 17));
%3D
System.out.println(trees.treeList());
System.out. println("Expected: [lemon, apple, cherry, avocado, apricot]" );
System.out.println(trees.tallest());
System.out.println("Expected: avocado");
System.out.println(trees.contains( "cherry"));
System.out.println("Expected: true");
System.out.println(trees.contains ( "peach"));
System.out.println( "Expected: false");
trees = new Orchard();
trees.add(new Tree("lemon",12.5 ));
trees.add (new Tree("apple", 20.0));
trees.add (new Tree("cherry", 13.5));;
trees.add(new Tree("apricot", 17));
%3D
%3D
System.out.println(trees.treeList ());
System.out.println("Expected: [lemon, apple, cherry, apricot]");
System.out. println(trees.tallest() );
System.out.println("Expected: apple");

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