# org.omg.PortableServer.POAManagerPackage

***

1. **Getting a POA manager reference**

```java
import org.omg.PortableServer.POAManager;
import org.omg.PortableServer.POAManagerPackage.AdapterInactive;

public class GetPOAManager {
    public static void main(String[] args) {
        try {
            // Get the root POA
            POA rootPOA = POAHelper.narrow(orb.resolve_initial_references("RootPOA"));

            // Get the POA manager reference
            POAManager poaManager = rootPOA.the_POAManager();

            // Print the POA manager reference
            System.out.println("POA manager reference: " + poaManager);
        } catch (AdapterInactive e) {
            // Handle the exception
            System.out.println("The POA is inactive");
        }
    }
}
```

2. **Creating a new POA**

```java
import org.omg.PortableServer.POAManager;
import org.omg.PortableServer.POAManagerPackage.AdapterAlreadyExists;
import org.omg.PortableServer.POAManagerPackage.InvalidPolicy;
import org.omg.PortableServer.POA;

public class CreatePOA {
    public static void main(String[] args) {
        try {
            // Get the root POA
            POA rootPOA = POAHelper.narrow(orb.resolve_initial_references("RootPOA"));

            // Get the POA manager reference
            POAManager poaManager = rootPOA.the_POAManager();

            // Create a new POA
            POA newPOA = poaManager.create_POA("NewPOA", rootPOA, thePolicies);

            // Print the new POA reference
            System.out.println("New POA reference: " + newPOA);
        } catch (AdapterAlreadyExists e) {
            // Handle the exception
            System.out.println("The POA already exists");
        } catch (InvalidPolicy e) {
            // Handle the exception
            System.out.println("The policies are invalid");
        }
    }
}
```

3. **Destroying a POA**

```java
import org.omg.PortableServer.POAManager;
import org.omg.PortableServer.POAManagerPackage.AdapterNonExistent;
import org.omg.PortableServer.POA;

public class DestroyPOA {
    public static void main(String[] args) {
        try {
            // Get the root POA
            POA rootPOA = POAHelper.narrow(orb.resolve_initial_references("RootPOA"));

            // Get the POA manager reference
            POAManager poaManager = rootPOA.the_POAManager();

            // Destroy the POA
            poaManager.destroy_POA("NewPOA");

            // Print a message
            System.out.println("The POA has been destroyed");
        } catch (AdapterNonExistent e) {
            // Handle the exception
            System.out.println("The POA does not exist");
        }
    }
}
```

4. **Getting the policies of a POA**

```java
import org.omg.PortableServer.POAManager;
import org.omg.PortableServer.POAManagerPackage.AdapterNonExistent;
import org.omg.PortableServer.POAManagerPackage.PolicyList;
import org.omg.PortableServer.POA;

public class GetPOAPolicies {
    public static void main(String[] args) {
        try {
            // Get the root POA
            POA rootPOA = POAHelper.narrow(orb.resolve_initial_references("RootPOA"));

            // Get the POA manager reference
            POAManager poaManager = rootPOA.the_POAManager();

            // Get the policies of the POA
            PolicyList policies = poaManager.get_policies("NewPOA");

            // Print the policies
            for (int i = 0; i < policies.value.length; i++) {
                System.out.println("Policy: " + policies.value[i]);
            }
        } catch (AdapterNonExistent e) {
            // Handle the exception
            System.out.println("The POA does not exist");
        }
    }
}
```

5. **Setting the policies of a POA**

```java
import org.omg.PortableServer.POAManager;
import org.omg.PortableServer.POAManagerPackage.AdapterNonExistent;
import org.omg.PortableServer.POAManagerPackage.InvalidPolicy;
import org.omg.PortableServer.POAManagerPackage.PolicyList;
import org.omg.PortableServer.POA;

public class SetPOAPolicies {
    public static void main(String[] args) {
        try {
            // Get the root POA
            POA rootPOA = POAHelper.narrow(orb.resolve_initial_references("RootPOA"));

            // Get the POA manager reference
            POAManager poaManager = rootPOA.the_POAManager();

            // Create a new policy list
            PolicyList policies = new PolicyList();

            // Add a policy to the list
            policies.value = new org.omg.CORBA.Policy[] { new org.omg.PortableServer.ImplicitActivationPolicy(true) };

            // Set the policies of the POA
            poaManager.set_policies("NewPOA", policies);

            // Print a message
            System.out.println("The policies of the POA have been set");
        } catch (AdapterNonExistent e) {
            // Handle the exception
            System.out.println("The POA does not exist");
        } catch (InvalidPolicy e) {
            // Handle the exception
            System.out.println("The policies are invalid");
        }
    }
}
```

6. **Getting the servants in a POA**

```java
import org.omg.PortableServer.POAManager;
import org.omg.PortableServer.POAManagerPackage.AdapterNonExistent;
import org.omg.PortableServer.POAManagerPackage.ObjectList;
import org.omg.PortableServer.POA;

public class GetPOAServants {
    public static void main(String[] args) {
        try {
            // Get the root POA
            POA rootPOA = POAHelper.narrow(orb.resolve_initial_references("RootPOA"));

            // Get the POA manager reference
            POAManager poaManager = rootPOA.the_POAManager();

            // Get the servants in the POA
            ObjectList servants = poaManager.get_contents("NewPOA");

            // Print the servants
            for (int i = 0; i < servants.value.length; i++) {
                System.out.println("Servant: " + servants.value[i]);
            }
        } catch (AdapterNonExistent e) {
            // Handle the exception
            System.out.println("The POA does not exist");
        }
    }
}
```

7. **Adding a servant to a POA**

```java
import org.omg.PortableServer.POAManager;
import org.omg.PortableServer.POAManagerPackage.AdapterNonExistent;
import org.omg.PortableServer.POAManagerPackage.ServantNotActive;
import org.omg.PortableServer.POA;

public class AddPOAServant {
    public static void main(String[] args) {
        try {
            // Get the root POA
            POA rootPOA = POAHelper.narrow(orb.resolve_initial_references("RootPOA"));

            // Get the POA manager reference
            POAManager poaManager = rootPOA.the_POAManager();

            // Create a new servant
            MyServant servant = new MyServant();

            // Add the servant to the POA
            poaManager.add_servant(servant, "MyServant");

            // Print a message
            System.out.println("The servant has been added to the POA");
        } catch (AdapterNonExistent e) {
            // Handle the exception
            System.out.println("The POA does not exist");
        } catch (ServantNotActive e) {
            // Handle the exception
            System.out.println("The servant is not active");

```