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Rose Marie
Object Oriented Programming II
2 Answer(s)      3 years and 9 months ago
Posted in : Java Beginners


Instructions:

->each class to be created must have encapsulated fields, setters and getters methods, and constructors

  1. Create a class named "Paper" with the following attributes -"length" of type int -"width" of type int -"content" of type String

    provide a method to compute the area of the paper

  2. Create a class named "Envelope" with the following attribute

    • "compilation" which is an array of type Paper

    provide a method to compute the total area of all papers inside the envelope provide a method to compare if two envelopes are equal provide a method to determine if there are two same papers inside the envelope


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November 25, 2010 at 5:10 PM


Hi Friend,

Try the following code:

import java.util.*;
class  Paper{
    int length;
    int width;
    String content;

    Paper(int length,int width,String content){
    this.length=length;
    this.width=width;
    this.content=content;
    }
    public void setLength(int length){
        length=length;
    }
    public int getLength(){
        return length;
    }
    public void setWidth(int width){
        width=width;
    }
    public int getWidth(){
        return width;
    }
    public void setContent(String content){
        content=content;
    }
    public String getContent(){
        return content;
    }
}
    class Envelope{
    public static void main(String[] args){
        int ar1[]=new int[5];
        int ar2[]=new int[5];
        int count=0;
        int totalarea1=0,totalarea2=0;
        System.out.println("Envelope 1:");
        Paper p1[]=new Paper[5];
        Scanner input=new Scanner(System.in);
            for(int i=0;i<p1.length;i++){
            System.out.println("Enter length of paper "+(i+1)+": ");
            int len=input.nextInt();
            System.out.println("Enter width of paper "+(i+1)+": ");
            int wid=input.nextInt();
            int aa=len*wid;
            ar1[i]=aa;
            p1[i]=new Paper(len,wid,Integer.toString(aa));
            p1[i].setLength(len);
            p1[i].setWidth(wid);
            p1[i].setContent(Integer.toString(aa));
        }
        for(int i=0;i<p1.length;i++){
            totalarea1+=Integer.parseInt(p1[i].getContent());
        }
        System.out.println("Total Area of all papers inside the envelope1: "+totalarea1);
         System.out.println("Envelope 2:");
         Paper p2[]=new Paper[5];
            for(int i=0;i<p2.length;i++){
            System.out.println("Enter length of paper "+(i+1)+": ");
            int len=input.nextInt();
            System.out.println("Enter width of paper "+(i+1)+": ");
            int wid=input.nextInt();
            int aa=len*wid;
            ar2[i]=aa;
            p2[i]=new Paper(len,wid,Integer.toString(aa));
            p2[i].setLength(len);
            p2[i].setWidth(wid);
            p2[i].setContent(Integer.toString(aa));
        }
        for(int i=0;i<p2.length;i++){
        totalarea2+=Integer.parseInt(p2[i].getContent());
        }
        System.out.println("Total Area of all papers inside the envelope2: "+totalarea2);
        if(totalarea1==totalarea2){
            System.out.println("Envelopes are equal");
        }
        else{
            System.out.println("Envelopes are not equal");
        }
    }
}

Thanks



November 25, 2010 at 5:10 PM


Hi Friend,

Try the following code:

import java.util.*;
class  Paper{
    int length;
    int width;
    String content;

    Paper(int length,int width,String content){
    this.length=length;
    this.width=width;
    this.content=content;
    }
    public void setLength(int length){
        length=length;
    }
    public int getLength(){
        return length;
    }
    public void setWidth(int width){
        width=width;
    }
    public int getWidth(){
        return width;
    }
    public void setContent(String content){
        content=content;
    }
    public String getContent(){
        return content;
    }
}
    class Envelope{
    public static void main(String[] args){
        int ar1[]=new int[5];
        int ar2[]=new int[5];
        int count=0;
        int totalarea1=0,totalarea2=0;
        System.out.println("Envelope 1:");
        Paper p1[]=new Paper[5];
        Scanner input=new Scanner(System.in);
            for(int i=0;i<p1.length;i++){
            System.out.println("Enter length of paper "+(i+1)+": ");
            int len=input.nextInt();
            System.out.println("Enter width of paper "+(i+1)+": ");
            int wid=input.nextInt();
            int aa=len*wid;
            ar1[i]=aa;
            p1[i]=new Paper(len,wid,Integer.toString(aa));
            p1[i].setLength(len);
            p1[i].setWidth(wid);
            p1[i].setContent(Integer.toString(aa));
        }
        for(int i=0;i<p1.length;i++){
            totalarea1+=Integer.parseInt(p1[i].getContent());
        }
        System.out.println("Total Area of all papers inside the envelope1: "+totalarea1);
         System.out.println("Envelope 2:");
         Paper p2[]=new Paper[5];
            for(int i=0;i<p2.length;i++){
            System.out.println("Enter length of paper "+(i+1)+": ");
            int len=input.nextInt();
            System.out.println("Enter width of paper "+(i+1)+": ");
            int wid=input.nextInt();
            int aa=len*wid;
            ar2[i]=aa;
            p2[i]=new Paper(len,wid,Integer.toString(aa));
            p2[i].setLength(len);
            p2[i].setWidth(wid);
            p2[i].setContent(Integer.toString(aa));
        }
        for(int i=0;i<p2.length;i++){
        totalarea2+=Integer.parseInt(p2[i].getContent());
        }
        System.out.println("Total Area of all papers inside the envelope2: "+totalarea2);
        if(totalarea1==totalarea2){
            System.out.println("Envelopes are equal");
        }
        else{
            System.out.println("Envelopes are not equal");
        }
    }
}

Thanks



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