It is a part of code of project in Anylogic, where i need to process requests and every time, when i try it – the same 1 request unprocessed.

for (Request curRequest : request) {
    System.out.print(curRequest + " ");
}
//where we can find all requests
Collections.sort(request, new Comparator<Request>() {
    @Override
    public int compare(Request r1, Request r2) {
    //System.out.println(r1.toString() +" "+ r2.toString());
        return Double.compare(r2.pricePriority, r1.pricePriority);
    }
});
/*for (Request curRequest : request) {
    System.out.print(curRequest + " ");
}*/
//the same, but there is some problem with java.lang.IndexOutOfBoundsException, which not influance on all work of code
Iterator<Request> iterator = request.iterator();
while (iterator.hasNext()) {
    Request currentRequest = iterator.next();
    System.out.println(currentRequest);
//where you can find only 8 items 
    Clients currentClient = null;
    for (Clients client : clients) {
        if (client.name.equals(currentRequest.to)) {
            currentClient = client;
            break;
        }
    }

    Warehouse currentWarehouse = null;
    for (Warehouse warehouse : warehouse) {
        if (warehouse.codeOfWarehouse == currentRequest.from) {
            currentWarehouse = warehouse;
            break;
        }
    }
    
    int distance = 1;
    List<BatchWithDestination> matchingBatches = new ArrayList<>();
    for (BatchWithDestination batch : currentWarehouse.batchIn) {
        if (batch.codeOfProduct == currentRequest.codeOfProduct &&
            (batch.remainedValidity-distance) >= currentRequest.requiredValidity) {
            matchingBatches.add(batch);
        }
    }
    String status = "не определён";
    
    if (matchingBatches.isEmpty()) {
    status = "полностью не реализован";
        fatalRequest.add(new Request(currentRequest.pricePriority, currentRequest.to, currentRequest.from, currentRequest.quantity, currentRequest.requiredValidity, currentRequest.codeOfProduct, currentRequest.data, status));
        break;}
        
    Collections.sort(matchingBatches, new Comparator<BatchWithDestination>() {
    @Override
    public int compare(BatchWithDestination b1, BatchWithDestination b2) {
        return Double.compare(b1.remainedValidity, b2.remainedValidity);
    }
});

   BatchWithDestination currentBatch = matchingBatches.get(0); 
   if (currentClient == null) {
    System.out.println("Client not found: " + currentRequest.to);
    continue;
}

if (currentWarehouse == null) {
    System.out.println("Warehouse not found: " + currentRequest.from);
    continue;
}

if (currentBatch == null) {
    System.out.println("Batch not found in warehouse for the product: " + currentRequest.codeOfProduct);
    continue;
}
double realisedQuantity = currentRequest.quantity;

    if (currentRequest.quantity >= currentBatch.quantity) {
    currentRequest.set_quantity(currentRequest.quantity - currentBatch.quantity);
    currentClient.batchIn.add(new Batch(currentBatch.codeOfProduct, currentBatch.remainedValidity, currentBatch.quantity, currentBatch.data));
    currentWarehouse.batchIn.remove(currentBatch);
    matchingBatches.remove(currentBatch);
    int i = 0;
    while(currentRequest.quantity>0){
    if(matchingBatches.isEmpty() || i >= matchingBatches.size()){
    currentBatch.set_quantity(currentBatch.quantity - currentRequest.quantity);
    status = "частично выполнен";
    fatalRequest.add(new Request(currentRequest.pricePriority, currentRequest.to, currentRequest.from, currentRequest.quantity, currentRequest.requiredValidity, currentRequest.codeOfProduct, currentRequest.data, status));
    realisedQuantity -= currentRequest.quantity;  
    satisfiedRequest.add(new Request(currentRequest.pricePriority, currentRequest.to, currentRequest.from, realisedQuantity, currentRequest.requiredValidity, currentRequest.codeOfProduct,  currentRequest.data, status));
        break;
    }
    currentBatch = matchingBatches.get(i);
    if(currentRequest.quantity > currentBatch.quantity){
    currentRequest.set_quantity(currentRequest.quantity - currentBatch.quantity);
    currentClient.batchIn.add(new Batch(currentBatch.codeOfProduct, currentBatch.remainedValidity, currentBatch.quantity, currentBatch.data));
    currentWarehouse.batchIn.remove(currentBatch);
    i++;}
    else if(currentRequest.quantity < currentBatch.quantity){
    currentClient.batchIn.add(new Batch(currentBatch.codeOfProduct, currentBatch.remainedValidity, currentRequest.quantity, currentBatch.data));
    currentBatch.set_quantity(currentBatch.quantity - currentRequest.quantity);
    currentRequest.set_quantity(0);}
    else {
    currentClient.batchIn.add(new Batch(currentBatch.codeOfProduct, currentBatch.remainedValidity, currentBatch.quantity, currentBatch.data));
    currentRequest.set_quantity(0);
    currentWarehouse.batchIn.remove(currentBatch);}
    }
    }
    else if(currentRequest.quantity < currentBatch.quantity && currentRequest.quantity!=0){
    currentClient.batchIn.add(new Batch(currentBatch.codeOfProduct, currentBatch.remainedValidity, currentRequest.quantity, currentBatch.data));
    currentBatch.set_quantity(currentBatch.quantity - currentRequest.quantity);
    currentRequest.set_quantity(0);
    }

    if (currentRequest.quantity == 0) {
    status = "выполнен";
    satisfiedRequest.add(new Request(currentRequest.pricePriority, currentRequest.to, currentRequest.from, realisedQuantity, currentRequest.requiredValidity, currentRequest.codeOfProduct,  currentRequest.data, status));
        
    }
}

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