import java.util.ArrayList;
import java.util.Collections;

public class InsuranceCompany {

private String companyName;

private ArrayList<ProjectInvoice> lstInvoices;

public InsuranceCompany(String name){

   lstInvoices = new ArrayList<>();
}

public String getCompanyName() {
   return companyName;
}

public void setCompanyName(String companyName) {
   if(companyName != null && !companyName.trim().isEmpty()) {
         this.companyName = companyName;
   }else {
         this.companyName = "unknown";
   }
}

public void addProjectInvoice(ProjectInvoice projectInvoice){
   lstInvoices.add(projectInvoice);
}

public void displayProjectInvoice(String invoiceNum) throws InvalidInvoiceNumberException {
   if(invoiceNum == null || invoiceNum.length() < 7){
         throw new InvalidInvoiceNumberException();
   }else{
         for(ProjectInvoice invoice: lstInvoices){
            if(invoiceNum.equals(invoice.getInvoiceNumber())){
               System.out.println(invoice);
               break;
            }
         }
   }
}

public double calclulateTotalInsuranceFees(){
   double totalFee = 0;
   for (ProjectInvoice projectInvoice: lstInvoices){
         if(projectInvoice instanceof Labour){
            totalFee += projectInvoice.calculateTotalcost() * 0.05;
         }else if(projectInvoice instanceof LabourAndMaterial){
            totalFee += projectInvoice.calculateTotalcost() * 0.07;
         }else if(projectInvoice instanceof LabourAndMaterialAndEquipment){
            totalFee += projectInvoice.calculateTotalcost() * 0.10;
         }
   }

   return totalFee;
}

For this lab create the following classes: Class InsufficientFun...