Java Program 6 : The Location class Problem Description: **9.13 (The Location cl
ID: 3731512 • Letter: J
Question
Java Program 6 : The Location class
Problem Description:
**9.13 (The Location class) Design a class named Location for locating a maximal value and its location in a two-dimensional array. The class contains public data fields row, column, and maxValue that store the maximal value and its indices in a two-dimensional array with row and column as int types and maxValue as a double type.
Write the following method that returns the location of the largest element in a two-dimensional array:
public static Location locateLargest(double[][] a)
The return value is an instance of Location. Write a test program that prompts the user to enter a two-dimensional array and displays the location of the largest element in the array.
Here is a sample run:
Enter the number of rows and columns in the array: 3 4
Enter the array:
23.5 35 2 10
4.5 3 45 3.5
35 44 5.5 9.6
The location of the largest element is 45 at (1, 2)
Coding:
Name your program
TestLocation.java
Location.java
Explanation / Answer
PROGRAM
import java.io.*;
import java.util.Scanner;
class Location // Create Class Location
{
// Declare static variable
public static int row,column;
public static double maxValue;
public static int p1,p2;
public static Location locateLargest(double[][] a) // declare and implement static method LocateLargest()
{
Scanner scr=new Scanner(System.in); // Create Scanner Object scr for reading elements
Location l=new Location(); // Create Object of Location l
for(int i=0;i<row;i++){ // Create for loop until row elements
for(int j=0;j<column;j++){ //Create for loop until column elements
if(a[i][j]>maxValue){ // check condition for maximum value
l.maxValue=a[i][j]; // whether condition is true then store maxValue until last element in the 2D Array
// store the position elements in p1 and p2 of maxValue
p1=i;
p2=j;
}
}
}
return l; // return Location Object of Maximum value
}
}
class TestLocation // Create Main class TestLocation
{
public static void main(String args[])
{
Scanner scr=new Scanner(System.in); // Create Scanner Object scr for reading elements
// Create Objects l and l1 of Location class
Location l=new Location();
Location l1=new Location();
System.out.print("Enter the number of rows and columns in the array: ");
// read row and column size of 2D Array
l.row=scr.nextInt();
l.column=scr.nextInt();
double [][] a=new double[l.row][l.column]; // Declare 2D Array with row and column size
System.out.println("Enter the array: ");
// Read 2D Matrix of l.row X l.column size
for(int i=0;i<l.row;i++)
for(int j=0;j<l.column;j++)
a[i][j]=scr.nextDouble();
l1=l.locateLargest(a); // call locateLargest() method and return maximum value
System.out.print("The location of the largest element is "+l.maxValue+" at ("+l.p1+", "+l.p2+")"); // print maxValue and position of 2D Array
}
}
OUTPUT-1
F:>javac TestLocation.java
F:>java TestLocation
Enter the number of rows and columns in the array: 3 4
Enter the array:
23.5 35 2 10
4.5 3 45 3.5
35 44 5.5 9.6
The location of the largest element is 45.0 at (1, 2)
OUTPUT-2
F:>java TestLocation
Enter the number of rows and columns in the array: 4 4
Enter the array:
34.5 6 78.5 2
4 55.4 2.3 8.7
43.4 65.5 99.6 44
12 33 5.4 6.5
The location of the largest element is 99.6 at (2, 2)
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