Check out example codes for "maximum subarray sum java". It will help you in understanding the concepts better.

Code Example 1

int maxsubarraysum(vector<int> ar) {
  int best = 0, sum = 0;
  for (int i=0; i<ar.size(); i++) {
    sum = max(ar[i], sum + ar[i]);
    best = max(best, sum);
  }
  return best;
}

Code Example 2

import java.io.*; 
// Java program to print largest contiguous array sum 
import java.util.*; 
  
class Kadane 
{ 
    public static void main (String[] args) 
    { 
        int [] a = {-2, -3, 4, -1, -2, 1, 5, -3}; 
        System.out.println("Maximum contiguous sum is " + 
                                       maxSubArraySum(a)); 
    } 
  
    static int maxSubArraySum(int a[]) 
    { 
        int size = a.length; 
        int max_so_far = Integer.MIN_VALUE, max_ending_here = 0; 
  
        for (int i = 0; i < size; i++) 
        { 
            max_ending_here = max_ending_here + a[i]; 
            if (max_so_far < max_ending_here) 
                max_so_far = max_ending_here; 
            if (max_ending_here < 0) 
                max_ending_here = 0; 
        } 
        return max_so_far; 
    } 
}

Code Example 3

# Python program to find maximum contiguous subarray 
  
def maxSubArraySum(a,size): 
      
    max_so_far =a[0] 
    curr_max = a[0] 
      
    for i in range(1,size): 
        curr_max = max(a[i], curr_max + a[i]) 
        max_so_far = max(max_so_far,curr_max) 
          
    return max_so_far 
  
# Driver function to check the above function  
a = [-2, -3, 4, -1, -2, 1, 5, -3] 
print"Maximum contiguous sum is" , maxSubArraySum(a,len(a)) 
  
#This code is contributed by _Devesh Agrawal_

Code Example 4

public int kadane(int[] arr){
	int max_so_far = 0, curr_max = Integer.MIN_VALUE;
    for(int i: arr){
    	max_so_far += i;
        if(max_so_far<0) max_so_far = 0;
        if(max_so_far>curr_max) curr_max = max_so_far;
    }
    return curr_max;
}

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