Program-To find largest number in an  array 

1. 
   
2. class LargestNumber
3. {
4. public static void main(String args[])
5. {
6. int arr[]={1,5,7,9,54,8};
7. System.out.println("Largest number in array is:"+findingNumber (arr));
8. }
9. public static int findingNumber(int arr[])
10. {
11. int largeno=arr[0];
12. for(int i=0;i<arr.length;i++)
13. {
14. if(arr[i]>largeno)
15. {
16. largeno=arr[i];
17. }
18. }
19. return largeno;
20. }
22. }