Java Program to find largest element in an array

Given an array, find the largest element in it.

Input : arr[] = {10, 20, 4} Output : 20 Input : arr[] = {20, 10, 20, 4, 100} Output : 100

**Method 1: Iterative Way**

`// Java Program to find maximum in arr[] ` `class` `Test` `{` ` ` `static` `int` `arr[] = {` `10` `, ` `324` `, ` `45` `, ` `90` `, ` `9808` `};` ` ` ` ` `// Method to find maximum in arr[]` ` ` `static` `int` `largest()` ` ` `{` ` ` `int` `i;` ` ` ` ` `// Initialize maximum element` ` ` `int` `max = arr[` `0` `];` ` ` ` ` `// Traverse array elements from second and` ` ` `// compare every element with current max ` ` ` `for` `(i = ` `1` `; i < arr.length; i++)` ` ` `if` `(arr[i] > max)` ` ` `max = arr[i];` ` ` ` ` `return` `max;` ` ` `}` ` ` ` ` `// Driver method` ` ` `public` `static` `void` `main(String[] args) ` ` ` `{` ` ` `System.out.println(` `"Largest in given array is "` `+ largest());` ` ` `}` ` ` `}` |

**Output:**

Largest in given array is 9808

**Method 2: Java 8 Stream**

You can simply use the new Java 8 Streams but you have to work with int.

`import` `java.util.Arrays;` ` ` `public` `class` `GFG {` ` ` `public` `static` `void` `main(String[] args){` ` ` `int` `arr[] = {` `10` `, ` `324` `, ` `45` `, ` `90` `, ` `9808` `};` ` ` `int` `max = Arrays.stream(arr).max().getAsInt();` ` ` `System.out.println(` `"Largest in given array is "` `+max);` ` ` `}` ` ` `}` |

**Output:**

Largest in given array is 9808

**Method 3 : (Sorting)**

`// Java program to find maximum in ` `// arr[] of size n ` `import` `java .io.*; ` `import` `java.util.*; ` ` ` `class` `GFG ` `{ ` ` ` `// returns maximum in arr[] of size n ` ` ` `static` `int` `largest(` `int` `[]arr, ` ` ` `int` `n) ` ` ` `{ ` ` ` `Arrays.sort(arr); ` ` ` `return` `arr[n - ` `1` `]; ` ` ` `} ` ` ` ` ` `// Driver code ` ` ` `static` `public` `void` `main (String[] args) ` ` ` `{ ` ` ` `int` `[]arr = {` `10` `, ` `324` `, ` `45` `, ` ` ` `90` `, ` `9808` `}; ` ` ` `int` `n = arr.length; ` ` ` `System.out.println(largest(arr, n)); ` ` ` `} ` `} ` |

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