Question: In a garden, trees are maintained. A tree has following set of attributes
1

Tree code, heights, base and amount spent on the tree so far.

(i) Define Tree class, its constructor, display() and update() that updates tree information.

(ii) Define derive class Mango tree that has additional yield attribute.

(iii) Define Garden class and display information of a tree and a Mango Tree.


Mumbai University > Computer Engineering > SEM-3 > OOPM

Marks: 10M

Year: DEC-15

ADD COMMENTlink
modified 2.4 years ago by gravatar for Sagar Narkar Sagar Narkar1.5k written 2.4 years ago by gravatar for Krrish Krrish190
3
/* 
 * To change this license header, choose License Headers in Project Properties.
 * To change this template file, choose Tools | Templates
 * and open the template in the editor.
 */

/**
 *
 * @author 4g3nt_47
 */
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
public class Tree {
    int code, height, base, time, ucode, uheight, ubase, utime;
    Tree(int c, int h, int b, int t)
    {
        code=c;
        height=h;
        base=b;
        time=t;
    }
    void display()
    {
        System.out.println("Tree Code is: "+code);
        System.out.println("Tree height is: "+height+" feet.");
        System.out.println("Tree base is: "+base+" cm wide.");
        System.out.println("amount of time spent so far on the tree is: "+time+" hours");   
    }
    void update() throws IOException
    {
        BufferedReader br=new BufferedReader(new InputStreamReader(System.in));
        System.out.println("Enter updated Tree Code");
        ucode=Integer.parseInt(br.readLine());
        System.out.println("Enter updated Tree Height");
        uheight=Integer.parseInt(br.readLine());
        System.out.println("Enter updated Tree base");
        ubase=Integer.parseInt(br.readLine());
        System.out.println("Enter updated time spent on a tree");
        utime=Integer.parseInt(br.readLine());
        code=ucode;
        height=uheight;
        base=ubase;
        time=utime;
    }
}

/*
 * To change this license header, choose License Headers in Project Properties.
 * To change this template file, choose Tools | Templates
 * and open the template in the editor.
 */

/**
 *
 * @author 4g3nt_47
 */
public class Mango extends Tree {
    int yeild;

    public Mango(int c, int h, int b, int t, int y) {
        super(c, h, b, t);
        yeild=y;
    }
    @Override
    void display()
    {
        System.out.println("Mango Tree Code is: "+code);
        System.out.println("Mango Tree height is: "+height+" feet.");
        System.out.println("Mango Tree base is: "+base+" cm wide.");
        System.out.println("amount of time spent so far on the mango tree is: "+time+" hours");
        System.out.println("Yeild of the Mango Tree is: "+yeild+" fruits.");
    }
}


/*
 * To change this license header, choose License Headers in Project Properties.
 * To change this template file, choose Tools | Templates
 * and open the template in the editor.
 */

/**
 *
 * @author 4g3nt_47
 */
/*import java.io.BufferedReader;
import java.io.InputStreamReader;
*/
import java.io.*;
public class Garden {
    public static void main(String[] args) throws IOException{
        Tree t=new Tree(10,130,150,20);
        Mango m=new Mango(15,150,170,20,200);
        System.out.println("Information of the Tree is:");
        System.out.println("\n");
        t.display();
        System.out.println("\n");
        System.out.println("Information of the Mango Tree is:");
        System.out.println("\n");
        m.display();
        BufferedReader br=new BufferedReader(new InputStreamReader(System.in));
        String input;
        System.out.println("press y to update and print the updated tree information");
        input=br.readLine();
        if(input.equals("y"))
        {
            t.update();
            System.out.println("\n");
            System.out.println("updated tree information is: ");
            System.out.println("\n");
            t.display();
        }
     }
}

OUTPUT

run: Information of the Tree is:

Tree Code is: 10 Tree height is: 130 feet. Tree base is: 150 cm wide. amount of time spent so far on the tree is: 20 hours

Information of the Mango Tree is:

Mango Tree Code is: 15 Mango Tree height is: 150 feet. Mango Tree base is: 170 cm wide. amount of time spent so far on the mango tree is: 20 hours Yeild of the Mango Tree is: 200 fruits. press y to update and print the updated tree information y Enter updated Tree Code 20 Enter updated Tree Height 180 Enter updated Tree base 200 Enter updated time spent on a tree 25

updated tree information is:

Tree Code is: 20 Tree height is: 180 feet. Tree base is: 200 cm wide. amount of time spent so far on the tree is: 25 hours BUILD SUCCESSFUL (total time: 39 seconds)

ADD COMMENTlink
written 2.4 years ago by gravatar for Krrish Krrish190
Please log in to add an answer.