Question

Write a java code based on the below question.

Q4 revision: Assume the following is ur input file. 5 Rectangle Length Width A 3 B 7 6 с 3 8 Write a program to read the above input file, then calculate the area of each rectangle. The output should be stored in output file. You also have to identify which rectangle has the biggest sizs. 17:30

Answer 1

Find the code for the above question below, read the comments provided in the code for better understanding. If found helpful please do upvote this.
Please refer to the screenshot of the code to understand the indentation of the code.

Copyable Code

import java.util.*;//for SCanner class

import java.io.*;//for file opeartions

//class

public class RectArea {

    // main driver code of the program

    public static void main(String args[]) {

        try {

            Scanner x = new Scanner(new File("input.txt"));

            //output file to save the output

            PrintWriter out = new PrintWriter("output.txt");

            out.println("Rectangle\tArea");

            //read the first line

            x.nextLine();

            while(x.hasNext()){

                //read th line and tokenize the data

                char rectName =x.next().charAt(0);

                int len=x.nextInt();

                int bre=x.nextInt();

                //calulate the area

                int area  = len*bre;

                //save into file

                out.println(rectName+"\t\t"+area);

            }

            //close both the files

            x.close();

            out.close();

            System.out.println("output.txt file created");

        } catch (Exception e) {

            System.out.println("File Not Found : "+e.getMessage());

            e.printStackTrace();

        }

    }

}

SCreenshot of code

1 import java.util.*;//for Scanner class port java.io.*;//for file opeartions 2 3 4 5 6 7 8 9 10 11 12 13 //class public class Rectarea { // main driver code of the program Run Debug public static void main(String args[]) { try { Scanner x = new Scanner(new File("input.txt")); //output file to save the output PrintWriter out = new PrintWriter("output.txt"); out.println("Rectangle\tArea"); 14 //read the first line x.nextLine(); while(x.hasNext()){ //read th line and tokenize the data char rectName =x.next().charAt(0); int len=x.nextInt(); int bre=x.nextInt(); //calulate the area int area = len*bre; //save into file out.println(rectName+"\t\t"+area); 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 } //close both the files x.close(); out.close(); System.out.println("output.txt file created"); } catch (Exception e) { System.out.println("File Not Found : "+e.getMessage()); e.printStackTrace(); ܝܟ نہا

Input File (input.txt)

Rectangle Length Width
A 5 3
B 7 6
C 3 8   

input.txt 1 Rectangle 2 А 3 B 4 C Length Width 5 3 7 6 3 8

Output

Console.output

PS F:\HomeworkLib\java> cd "f:\che output.txt file created

output.txt file

output.txt - Notepad File Edit Format View Help Rectangle Area A 15 B 42 с 24