Java: Calculate Total Quantity from a List of VmiMaterialDocument Objects

This Java code iterates through a list of 'VmiMaterialDocument' objects and calculates the sum of their 'TotalQuantity' fields using BigDecimal for accurate numeric calculations.

import java.math.BigDecimal;
import java.util.List;

public BigDecimal calculateTotalQuantitySum(List<VmiMaterialDocument> vmiListGtZero) {
    BigDecimal sum = BigDecimal.ZERO;
    for (VmiMaterialDocument document : vmiListGtZero) {
        sum = sum.add(document.getTotalQuantity());
    }
    return sum;
}

Explanation:

1. Initialization: A BigDecimal variable 'sum' is initialized to BigDecimal.ZERO.
2. Iteration: The code iterates through each 'VmiMaterialDocument' object in the 'vmiListGtZero' list.
3. Sum Calculation: For each object, the 'TotalQuantity' field is added to the 'sum' variable using the BigDecimal.add() method.
4. Return Value: The final calculated sum is returned as a BigDecimal object.

Important Note: Replace 'VmiMaterialDocument' with the actual class name of your object. This code ensures precise calculation of the total quantity by using BigDecimal for handling decimal values.