Urgent! Nested If- Else statements.Help me

Question

Please help me, I gt a problem using a nested if else statements.I have 3 objects called bpdu objects. These 3 bpdu objects need to be compared with each other based on their Priority and Mac Address.The program below shows the program that have been done and I wish to know how do I compare the Mac address continuing from the Piority.
I also want to know if the Priority comparison is in the correct sequence
Here is the code.
import java.util.*;
import java.sql.*;
import java.io.*;
import java.net.*;
import java.lang.*;
public class RootBridgeApp
     RootBridge root= new RootBridge();
     ArrayList dataList=root.retrieveAll(compName);
     BPDU bpdu=dataList.get(0);
     BPDU bpdu2=dataList.get(1);
     BPDU bpdu3=dataList.get(2);
//COMPARE ON PRIORITY
     if(bpdu.getBridgeIDPriority()<bpdu2.getBridgeIDPriority())
     {   //comparing bpdu with bpdu3
          if(bpdu.getBridgeIDPriority()<bpdu3.getBridgeIDPriority())
               System.out.println(bpdu.getComputerName + "is Root Bridge!");
          //comparing bpdu3 with bpdu2
          else if(bpdu3.getBridgeIDPriority()<bpdu2.getBridgeIDPriority())
               System.out.println(bpdu3.getComputerName + "is Root Bridge!");
          else
               System.out.println(bpdu2.getComputerName + "is Root Bridge!");
     //comparing bpdu2 with bpdu3
     else if(bpdu2.getBridgeIDPriority()<bpdu3.getBridgeIDPriority())
          System.out.println(bpdu2.getComputerName + "is Root Bridge!");
     else
          System.out.println(bpdu3.getComputerName + "is Root Bridge!");
     //IF SAME THEN COMPARE BY MAC
// COMPARE BY MAC  ... how do i continue form here?
     if(bpdu.getBridgeIDMac()<bpdu2.getBridgeIDMac())
     {   //comparing bpdu with bpdu3
          if(bpdu.getBridgeIDMac()<bpdu3.getBridgeIDMac())
               System.out.println(bpdu.getComputerName + "is Root Bridge!");
          //comparing bpdu3 with bpdu2
          else if(bpdu3.getBridgeIDMac()<bpdu2.getBridgeIDMac())
               System.out.println(bpdu3.getComputerName + "is Root Bridge!");
          else
               System.out.println(bpdu2.getComputerName + "is Root Bridge!");
     //comparing bpdu2 with bpdu3
     else if(bpdu2.getBridgeIDMac()<bpdu3.getBridgeIDMac())
          System.out.println(bpdu2.getComputerName + "is Root Bridge!");
     else
          System.out.println(bpdu3.getComputerName + "is Root Bridge!");
     }

Answer 1

if (bdpu < bdpu2)
if (dbpu < bdpu3)
{ dbpu is min. }
else { bdpu3 is min. }
else if (bdpu2 < bdpu3)
{ bdpu2 is min. }
else if (bdpu3 < bdpu2)
{ bdpu3 is min. }
else [there are two the same]
{  compare by mac here..
}If bdpu = bdpu3, and both are less than bdpu2, this will erroneously say that bdpu3 is min (line 4) and never check the macs.
This type of logic checking could get hairy as the number of items to compare increases beyond 3. Could you store the values in the list as something Comparable (like Strings) and sort them by priority, then mac?