$show=/label

Java Program to Find Largest Element of an Array(+Java 8 Approach)

SHARE:

A quick and practical guide to find the largest value of an array. Different solutions are shown with example programs along with java. 8.

1. Overview

In this article, you'll learn how to find the largest value from an array. You should know the basic understanding of java Arrays, for-each loopand java 8 lambdas.

Finding the biggest value can be done in different ways.

Let us explore 3 different ways using for each loop, sort() method,  java 8 streams.

Note: Array is not sorted. if is sorted in ascending already then take the value from the array the last index-1 which gives the biggest value. If sorted descending, take zero index value.

Java Program to Find Largest Element of an Array(+Java 8 Approach)


2. Example 1 to find the largest value using for loop

This is a simple and iterative approach. Every developer writes this code easily in the interviews.

package com.javaprogramto.programs.arrays.largest;

import java.util.Arrays;

public class ForLooplargest {

	public static void main(String[] args) {

		// Creating unsorted array 1
		int[] arr = { 15, 3, 67, 8, 20 };
		System.out.println("Input array 1: " + Arrays.toString(arr));

		// calling a method to get the large value.
		int largest = getLargestNumber(arr);

		System.out.println("largest value : " + largest);

		// Creating unsorted array 1
		int[] arr2 = { 900, -100, 500, 15000, 8377 };
		System.out.println("Input array 2: " + Arrays.toString(arr2));

		// calling a method to get the large value.
		largest = getLargestNumber(arr2);

		System.out.println("largest value : " + largest);

	}

	private static int getLargestNumber(int[] arr) {

		int max = 0;

		for (int i = 0; i < arr.length; i++) {
			if (arr[i] > max) {
				max = arr[i];
			}
		}
		return max;
	}

}

Output:

Input array 1: [15, 3, 67, 8, 20]
largest value : 67
Input array 2: [900, -100, 500, 15000, 8377]
largest value : 15000

3. Example 2 to find the largest value using Java 8 Streams

Arrays class is added with a new method stream() in java 8. Once the stream is created then next use the max() terminal method which returns Optional value. Finally, call getAsInt() method to get the largest. value as int type.

package com.javaprogramto.programs.arrays.largest;

import java.util.Arrays;

public class Java8StreamLargest {

	public static void main(String[] args) {

		// Creating unsorted array 1
		int[] arr = { 15, 3, 67, 8, 20 };
		System.out.println("Input array 1: " + Arrays.toString(arr));

		// using java 8 stream(), max() methods.
		int largest = Arrays.stream(arr).max().getAsInt();

		System.out.println("largest value : " + largest);

		// Creating unsorted array 1
		int[] arr2 = { 900, -100, 500, 15000, 8377 };
		System.out.println("Input array 2: " + Arrays.toString(arr2));

		// using java 8 stream(), max() and getAsInt() methods
		largest = Arrays.stream(arr2).max().getAsInt();

		System.out.println("largest value : " + largest);

	}

}

Output:

This program produces the output as same as in the above section.

Input array 1: [15, 3, 67, 8, 20]
largest value : 67
Input array 2: [900, -100, 500, 15000, 8377]
largest value : 15000

4. Example 3 to get the largest number using Sorting(Arrays.sort)

In this technique, we are going to use the sort logic from java api using the Arrays.sort() method.

Once the array sorted, get the last value from it.

package com.javaprogramto.programs.arrays.largest;

import java.util.Arrays;

public class JavaSortLargest {

	public static void main(String[] args) {

		// Creating unsorted array 1
		int[] arr = { 15, 3, 67, 8, 20 };
		System.out.println("Input array 1: " + Arrays.toString(arr));

		// using arrays.sort() method.
		int largest = sortLargest(arr);

		System.out.println("largest value : " + largest);

		// Creating unsorted array 1
		int[] arr2 = { 900, -100, 500, 15000, 8377 };
		System.out.println("Input array 2: " + Arrays.toString(arr2));

		// using arrays.sort() method.a
		largest = sortLargest(arr2);

		System.out.println("largest value : " + largest);

	}

	private static int sortLargest(int[] arr) {
		Arrays.sort(arr);

		return arr[arr.length - 1];
	}

}

This apprach also produces the same output.

5. Conclusion

In this article, you've seen how to get the largest number from the array with different approaches.

All produce the same output but the java 8 approach has less code.

As usual, all examples are over GitHub.

Arrays.sort()

Stream.max()

COMMENTS

BLOGGER

About Us

Author: Venkatesh - I love to learn and share the technical stuff.
Name

accumulo,1,ActiveMQ,2,Adsense,1,API,37,ArrayList,16,Arrays,14,Bean Creation,3,Bean Scopes,1,BiConsumer,1,Blogger Tips,1,Books,1,C Programming,1,Collection,5,Collections,22,Collector,1,Command Line,1,Compile Errors,1,Configurations,7,Constants,1,Control Statements,8,Conversions,6,Core Java,81,Corona India,1,Create,2,CSS,1,Date,3,Date Time API,4,Dictionary,1,Difference,1,Download,1,Eclipse,2,Efficiently,1,Error,1,Errors,1,Exception,1,Exceptions,3,Fast,1,Files,9,Float,1,Font,1,Form,1,Freshers,1,Function,3,Functional Interface,2,Garbage Collector,1,Generics,4,Git,4,Grant,1,Grep,1,HashMap,1,HomeBrew,2,HTML,2,HttpClient,2,Immutable,1,Installation,1,Interview Questions,5,Iterate,2,Jackson API,3,Java,30,Java 10,1,Java 11,5,Java 12,5,Java 13,2,Java 14,2,Java 8,66,Java 8 Difference,2,Java 8 Stream Conversions,2,java 8 Stream Examples,3,Java 9,1,Java Conversions,11,Java Design Patterns,1,Java Files,1,Java Program,2,Java Programs,72,java.lang,5,java.util. function,1,jQuery,1,Kotlin,10,Kotlin Conversions,3,Kotlin Programs,6,Lambda,1,lang,29,Leap Year,1,live updates,1,Logging,1,Mac OS,2,Math,1,Maven,1,Method References,1,Mockito,1,MongoDB,3,New Features,1,Operations,1,Optional,6,Oracle,5,Oracle 18C,1,Partition,1,Patterns,1,Programs,1,Property,1,Python,2,Quarkus,1,Read,1,Real Time,1,Recursion,2,Remove,2,Rest API,1,Schedules,1,Serialization,1,Servlet,1,Sort,1,Sorting Techniques,8,Spring,2,Spring Boot,23,Spring Email,1,Spring MVC,1,Streams,21,String,58,String Programs,10,String Revese,1,Swing,1,System,1,Tags,1,Threads,10,Tomcat,1,Tomcat 8,1,Troubleshoot,16,Unix,2,Updates,3,util,5,While Loop,1,
ltr
item
JavaProgramTo.com: Java Program to Find Largest Element of an Array(+Java 8 Approach)
Java Program to Find Largest Element of an Array(+Java 8 Approach)
A quick and practical guide to find the largest value of an array. Different solutions are shown with example programs along with java. 8.
https://1.bp.blogspot.com/-U0UKtkdRTSw/X4cgKJulJSI/AAAAAAAAC-w/R8NZJ2B2DOgBerHKXp7OLglBc9kNlPoBwCLcBGAsYHQ/w640-h428/Java%2BProgram%2Bto%2BFind%2BLargest%2BElement%2Bof%2Ban%2BArray%2528%252BJava%2B8%2BApproach%2529.png
https://1.bp.blogspot.com/-U0UKtkdRTSw/X4cgKJulJSI/AAAAAAAAC-w/R8NZJ2B2DOgBerHKXp7OLglBc9kNlPoBwCLcBGAsYHQ/s72-w640-c-h428/Java%2BProgram%2Bto%2BFind%2BLargest%2BElement%2Bof%2Ban%2BArray%2528%252BJava%2B8%2BApproach%2529.png
JavaProgramTo.com
https://www.javaprogramto.com/2020/10/java-program-to-find-largest-element-of-array.html
https://www.javaprogramto.com/
https://www.javaprogramto.com/
https://www.javaprogramto.com/2020/10/java-program-to-find-largest-element-of-array.html
true
3124782013468838591
UTF-8
Loaded All Posts Not found any posts VIEW ALL Readmore Reply Cancel reply Delete By Home PAGES POSTS View All RECOMMENDED FOR YOU LABEL ARCHIVE SEARCH ALL POSTS Not found any post match with your request Back Home Sunday Monday Tuesday Wednesday Thursday Friday Saturday Sun Mon Tue Wed Thu Fri Sat January February March April May June July August September October November December Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec just now 1 minute ago $$1$$ minutes ago 1 hour ago $$1$$ hours ago Yesterday $$1$$ days ago $$1$$ weeks ago more than 5 weeks ago Followers Follow THIS PREMIUM CONTENT IS LOCKED STEP 1: Share to a social network STEP 2: Click the link on your social network Copy All Code Select All Code All codes were copied to your clipboard Can not copy the codes / texts, please press [CTRL]+[C] (or CMD+C with Mac) to copy Table of Content