MBeans for stable resources - JMX in Action - page 78

interface is misleading to a human reader. By definition, this interface exposes
only one (writable) attribute: Source . All other methods are exposed operations.
Listing 4.1 shows the implementation of the PropertyManagerMBean interface.

Listing 4.1 PropertyManager.java

package jmxbook.ch4;

import java.util.*;
import java.io.*;

public class PropertyManager implements PropertyManagerMBean
{
private Properties props = null;

public PropertyManager( String path )
{
try
{
//load supplied property file
props = new Properties();
FileInputStream f = new FileInputStream( path );
props.load( f );
f.close();
}
catch( Exception e )
{
e.printStackTrace();
}
}
public String getProperty( String key )
{
return props.getProperty( key );
}

public void setProperty( String key, String value )
{
props.setProperty( key, value );
}

public Enumeration keys()
{
return props.keys();
}

public void setSource( String path )
{
try
{
props = new Properties();
FileInputStream f = new FileInputStream( path );