Find the Largest Element in a Matrix in Java

In this post, you will learn how to find the largest element in a given Matrix in Java. To find the largest element in a matrix (2D array) in Java, you can use a similar approach as finding the smallest element, but instead of looking for smaller elements, you’ll look for larger ones.

Here’s a Java program logic to find the largest element in a matrix:

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package com.javacodepoint.array.multidimensional;
 
public class LargestElementInMatrix {
     
    public static int findLargestElement(int[][] matrix) {
        if (matrix == null || matrix.length == 0) {
            throw new IllegalArgumentException("Input matrix is null or empty.");
        }
 
        int largest = matrix[0][0]; // Initialize with the first element of the matrix
 
        // Iterate through the matrix and update the largest value
        // if a larger element is found
        for (int i = 0; i < matrix.length; i++) {
            for (int j = 0; j < matrix[i].length; j++) {
                if (matrix[i][j] > largest) {
                    largest = matrix[i][j];
                }
            }
        }
 
        return largest;
    }
 
    public static void main(String[] args) {
        int[][] matrix = { { 14, 12, 6 }, { 8, -3, 10 }, { 5, 19, 7 } };
 
        int largestElement = findLargestElement(matrix);
 
        System.out.println("Matrix:");
        for (int[] row : matrix) {
            for (int value : row) {
                System.out.print(value + " ");
            }
            System.out.println();
        }
 
        System.out.println("The largest element in the matrix: " + largestElement);
    }
}

OUTPUT:

Matrix:
14 12 6
8 -3 10
5 19 7
The largest element in the matrix: 19

Explanation:

In this program, we have a findLargestElement method that takes a 2D matrix as input and returns the largest element in the matrix.

We initialize the largest variable with the value of the first element of the matrix (matrix[0][0]). Then, we iterate through the matrix using nested loops. For each element, we compare it with the current value of largest. If the element is larger than largest, we update largest to the value of the element.

After iterating through the entire matrix, largest will contain the largest element.

Learn also: Find the Smallest Element in a Matrix.

Java logical programs list

Java Basic Programs

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  2. Java Program to Add two Numbers
  3. Java Program to Subtract two Numbers
  4. Java Program to Multiply two Numbers
  5. Java Program to Check Whether a Number is Even or Odd.
  6. Check whether a character is a Vowel or Consonant.
  7. Java Program to find Average of Two Numbers
  8. Java Program to find Average of Three Numbers
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  10. Java Program to Calculate Simple Interest
  11. Java Program to Calculate Compound Interest
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  14. How to calculate the factorial of a given number in java?
  15. How to check whether an integer number is a prime number or not in java?
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  17. How to check whether a number is an Armstrong number or not in java?
  18. How to reverse a number in Java?
  19. How to check whether a number is a Palindrome number or not in Java?
  20. How to swap two numbers without using a third variable in Java?
  21. How to reverse a string without using the reverse() method in java?
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Java String Programs

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  4. Reverse a string without using the reverse() method.
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  7. Count characters from the string in Java.
  8. Count the number of words in the String.
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  10. Count the occurrence of the given character in a string.
  11. Find the Maximum Occurring Character in a String
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  16. Compare two Strings in Java.
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Java String Array Programs

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  3. Find Duplicate Strings
  4. Find Strings of Maximum Length
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  6. Find Strings Containing a Substring
  7. String Permutations in an Array
  8. Find Strings Ending with a Specific Character
  9. Find Strings Containing Only Numbers
  10. Remove Strings Containing a Substring
  11. Find the Longest Common Prefix in an Array
  12. Check for Unique Characters in an Array
  13. Concatenate Strings by Delimiter
  14. Split Strings by Delimiter
  15. Find Common Strings from Two Arrays
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Java Pattern Printing Programs

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Java Series Printing Programs

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Java Array-Based Programs

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  8. Sum of Two Arrays.
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  13. Average of Odd/Even Numbers in Array.
  14. Count Even and Odd numbers in Array
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  7. Symmetric Matrix Program.
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  10. Find the Largest Element in a Matrix.
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Java Sorting Programs

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Java Searching Programs

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Java Conversion Programs

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Java Game Programs

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Java Miscellaneous Programs

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Java Programs based on the Collection Framework

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  3. Find duplicate elements in an ArrayList
  4. Implement a Java program to sort an ArrayList of integer numbers.
  5. Implement a Java program to sort an ArrayList of custom objects based on a specific attribute.
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  8. Write a Java program to remove all elements from an ArrayList that are greater than a certain value.
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  10. Write a Java program to find the common elements in two given ArrayLists.
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