Bin packing, how do I include multiple 'bin sizes'

Question

The code below is working well, however it isn't quite what I am looking for. It finds an efficient way to cut variable sizes (user input) from one static stock size. I want to alter the code so it finds an efficient way to cut the variable sizes from multiple static stock sizes, 4 to be specific.

public static void binPacking(double[] FinalCuttingList, double size, int TotalCuts)
{
    int StockLengthCount = 0;
    double[] StockValues = new double[TotalCuts];
    for (int i = 0; i < StockValues.length; i++)
        StockValues[i] = size;

    for (int i = 0; i < TotalCuts; i++)
        for (int o = 0; o < StockValues.length; o++)
        {
            if (StockValues[o] - FinalCuttingList[i] >= 0)
            {
                StockValues[o] -= FinalCuttingList[i];
                break;
            }
        }

    for (int i = 0; i < StockValues.length; i++)
        if (StockValues[i] != size)
            StockLengthCount++;

    System.out
            .println("Number of 3400mm pieces required is :"
                    + StockLengthCount);
}

static double[] sort(double[] sequence)
{
    // Sort in descending order
    for (int i = 0; i < sequence.length; i++)
        for (int o = 0; o < sequence.length - 1; o++)
            if (sequence[o] < sequence[o + 1])
            {
                sequence[o] = sequence[o] + sequence[o + 1];
                sequence[o + 1] = sequence[o] - sequence[o + 1];
                sequence[o] = sequence[o] - sequence[o + 1];
            }
    return sequence;
}