The changes which I have made in Constants.java, ConfigureSimulationPanel.java have not been reflected in the GUI. I have created copies of these files like Constants1.java and ConfigureSimulationPanel1.java alongwith GuiMain1.java and can run GuiMain1.java with references changed from Constants.java to Constants1.java and ConfigureSimulationPanel.java to ConfigureSimulationPanel1.java.
I have added new line:
cmbLoadBalancingPolicy = new JComboBox(new String[]{
Constants1.LOAD_BALANCE_POLICY_RR,
-------
Constants1.LOAD_BALANCE_POLICY_CRR,
Similary I have added the following to ConfigureSimulationPanels1.java:
final String LOAD_BALANCE_POLICY_RR = "Round Robin";
--
final String LOAD_BALANCE_POLICY_CRR = "Changed Round Robin";