com.darwinsys.util
Class FileProperties

java.lang.Object
  |
  +--java.util.Dictionary
        |
        +--java.util.Hashtable
              |
              +--java.util.Properties
                    |
                    +--com.darwinsys.util.FileProperties

public class FileProperties

extends java.util.Properties

The FileProperties class extends Properties, "a persistent set of properties [that] can be saved to a stream or loaded from a stream". This subclass attends to all the mundane details of opening the Stream(s) for actually saving and loading the Properties.

This subclass preserves the useful feature that a property list can contain another property list as its "defaults"; this second property list is searched if the property key is not found in the original property list.

See Also:

Serialized Form

Field Summary

protected java.lang.String	fileName
protected java.io.InputStream	inStr The InputStream for loading
protected java.io.OutputStream	outStr The OutputStream for loading

Fields inherited from class java.util.Properties

defaults

Constructor Summary

FileProperties(java.lang.String loadsaveFileName)
Construct a FileProperties given a fileName.

FileProperties(java.lang.String loadsaveFileName, java.util.Properties defProp)
Construct a FileProperties given a fileName and a list of default properties.

Method Summary

void	close()
void	load() Load the properties from the saved filename.
void	save() Save the properties for later loading.

Methods inherited from class java.util.Properties

getProperty, getProperty, list, list, load, propertyNames, save, setProperty, store

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Methods inherited from class java.util.Hashtable

clear, clone, contains, containsKey, containsValue, elements, entrySet, equals, get, hashCode, isEmpty, keys, keySet, put, putAll, rehash, remove, size, toString, values

Methods inherited from class java.lang.Object

finalize, getClass, notify, notifyAll, wait, wait, wait

Field Detail

fileName

protected java.lang.String fileName

inStr

protected java.io.InputStream inStr

The InputStream for loading

outStr

protected java.io.OutputStream outStr

The OutputStream for loading

Constructor Detail

FileProperties

public FileProperties(java.lang.String loadsaveFileName)
               throws java.io.IOException

Construct a FileProperties given a fileName.

FileProperties

public FileProperties(java.lang.String loadsaveFileName,
                      java.util.Properties defProp)
               throws java.io.IOException

Construct a FileProperties given a fileName and a list of default properties.

Method Detail

load

public void load()
          throws java.io.IOException

Load the properties from the saved filename. If that fails, try again, tacking on the .properties extension

save

public void save()
          throws java.io.IOException

Save the properties for later loading.

close

public void close()