# javax.management.openmbean

***

**1. Creating an OpenMBean**

```java
import javax.management.openmbean.OpenMBeanAttributeInfo;
import javax.management.openmbean.OpenMBeanAttributeInfoSupport;
import javax.management.openmbean.OpenMBeanConstructorInfo;
import javax.management.openmbean.OpenMBeanConstructorInfoSupport;
import javax.management.openmbean.OpenMBeanInfo;
import javax.management.openmbean.OpenMBeanInfoSupport;
import javax.management.openmbean.OpenMBeanOperationInfo;
import javax.management.openmbean.OpenMBeanOperationInfoSupport;
import javax.management.openmbean.SimpleType;

public class CreateOpenMBean {

    public static void main(String[] args) {
        // Create an OpenMBeanInfo object
        OpenMBeanInfo info = new OpenMBeanInfoSupport(
            "com.example.openmbean:type=Example",
            "Example OpenMBean",
            new OpenMBeanAttributeInfo[]{
                new OpenMBeanAttributeInfoSupport("name", SimpleType.STRING, "The name attribute"),
                new OpenMBeanAttributeInfoSupport("value", SimpleType.INTEGER, "The value attribute")
            },
            new OpenMBeanConstructorInfo[]{
                new OpenMBeanConstructorInfoSupport("Example", "Example constructor", new OpenMBeanParameterInfo[]{
                    new OpenMBeanParameterInfo("name", SimpleType.STRING, "The name parameter"),
                    new OpenMBeanParameterInfo("value", SimpleType.INTEGER, "The value parameter")
                })
            },
            new OpenMBeanOperationInfo[]{
                new OpenMBeanOperationInfoSupport("getValue", "Get the value of the value attribute", SimpleType.INTEGER, new OpenMBeanParameterInfo[]{})
            }
        );

        // Create an OpenMBean object
        OpenMBean openMBean = new OpenMBean(info);
    }
}
```

**2. Getting the OpenMBeanInfo**

```java
import javax.management.openmbean.OpenMBean;
import javax.management.openmbean.OpenMBeanInfo;

public class GetOpenMBeanInfo {

    public static void main(String[] args) {
        // Create an OpenMBean object
        OpenMBean openMBean = new OpenMBean(new OpenMBeanInfoSupport("com.example.openmbean:type=Example", "Example OpenMBean", new OpenMBeanAttributeInfo[]{}, new OpenMBeanConstructorInfo[]{}, new OpenMBeanOperationInfo[]{}));

        // Get the OpenMBeanInfo object
        OpenMBeanInfo info = openMBean.getOpenMBeanInfo();
    }
}
```

**3. Getting the Attributes**

```java
import javax.management.openmbean.CompositeData;
import javax.management.openmbean.CompositeDataSupport;

public class GetAttributes {

    public static void main(String[] args) {
        // Create a CompositeData object
        CompositeData data = new CompositeDataSupport(new OpenMBeanInfoSupport("com.example.openmbean:type=Example", "Example OpenMBean", new OpenMBeanAttributeInfo[]{}, new OpenMBeanConstructorInfo[]{}, new OpenMBeanOperationInfo[]{}), new Object[]{"value1", 123});

        // Get the attributes
        Object[] attributes = data.getAll(data.getCompositeType().getAttributeNames());
    }
}
```

**4. Getting the Constructor Parameters**

```java
import javax.management.openmbean.ConstructorParameters;
import javax.management.openmbean.OpenMBeanConstructorInfo;

public class GetConstructorParameters {

    public static void main(String[] args) {
        // Create an OpenMBeanConstructorInfo object
        OpenMBeanConstructorInfo info = new OpenMBeanConstructorInfoSupport("Example", "Example constructor", new OpenMBeanParameterInfo[]{
            new OpenMBeanParameterInfo("name", SimpleType.STRING, "The name parameter"),
            new OpenMBeanParameterInfo("value", SimpleType.INTEGER, "The value parameter")
        });

        // Get the constructor parameters
        ConstructorParameters parameters = info.getSignature();
    }
}
```

**5. Getting the Operation Parameters**

```java
import javax.management.openmbean.OpenMBeanOperationInfo;

public class GetOperationParameters {

    public static void main(String[] args) {
        // Create an OpenMBeanOperationInfo object
        OpenMBeanOperationInfo info = new OpenMBeanOperationInfoSupport("getValue", "Get the value of the value attribute", SimpleType.INTEGER, new OpenMBeanParameterInfo[]{});

        // Get the operation parameters
        OpenMBeanParameterInfo[] parameters = info.getSignature();
    }
}
```

**6. Invoking an Operation**

```java
import javax.management.MBeanServerConnection;
import javax.management.ObjectName;
import javax.management.openmbean.CompositeData;
import javax.management.openmbean.CompositeDataSupport;
import javax.management.openmbean.OpenMBeanOperationInfo;
import javax.management.remote.JMXConnector;
import javax.management.remote.JMXConnectorFactory;
import javax.management.remote.JMXServiceURL;

public class InvokeOperation {

    public static void main(String[] args) throws Exception {
        // Create a JMX connection
        JMXServiceURL url = new JMXServiceURL("service:jmx:rmi:///jndi/rmi://localhost:1099/server");
        JMXConnector connector = JMXConnectorFactory.connect(url);
        MBeanServerConnection connection = connector.getMBeanServerConnection();

        // Get the MBean object
        ObjectName objectName = new ObjectName("com.example.openmbean:type=Example");

        // Get the operation info
        OpenMBeanOperationInfo info = connection.getOperationInfo(objectName, "getValue");

        // Invoke the operation
        CompositeData result = (CompositeData) connection.invoke(objectName, "getValue", new Object[]{}, info.getSignature());

```