46     private List<VirtualMachine> targets = new ArrayList<VirtualMachine>();

    46     private List<VirtualMachine> targets = new ArrayList<VirtualMachine>();

    47     private final ThreadGroup mainGroupForJDI;

    47     private final ThreadGroup mainGroupForJDI;

    48     private ResourceBundle messages = null;

    48     private ResourceBundle messages = null;

    49     private int vmSequenceNumber = 0;

    49     private int vmSequenceNumber = 0;

    50     private static final int majorVersion = 1;

    50     private static final int majorVersion = 1;

    52 

    52 

    53     private static final Object lock = new Object();

    53     private static final Object lock = new Object();

    54     private static VirtualMachineManagerImpl vmm;

    54     private static VirtualMachineManagerImpl vmm;

    55 

    55 

    56     public static VirtualMachineManager virtualMachineManager() {

    56     public static VirtualMachineManager virtualMachineManager() {