21.6

java.util.Properties

THE PACKAGE JAVA.UTIL

21.6.4

public String getProperty(String key)

If there is an entry in this

Properties

 table with

key

 as its key, the associated

element is returned. Otherwise, if this

Properties

 table has a defaults table, then

whatever its

getProperty

 method returns is returned. Otherwise,

null

 is

returned.

21.6.5

public String getProperty(String key,

String defaultValue)

If there is an entry in this

Properties

 table with

key

 as its key, the associated

element is returned. Otherwise, if this

Properties

 table has a defaults table, then

whatever its

getProperty

 method returns is returned. Otherwise,

defaultValue

is returned.

21.6.6

public Enumeration propertyNames()

An

Enumeration

 ( 21.1) is returned that will generate all the keys for which this

Properties

 table could supply an associated element. If this

Properties

 table

has a defaults table ( 21.6.1), then keys for which the defaults table has entries are

also supplied by the

Enumeration

, and so on, recursively; but no key is supplied

by the

Enumeration

 more than once.

21.6.7

public void load(InputStream in) throws IOException

Properties (key and element pairs) are read from the input stream:

Runtime.getRuntime().getLocalizedInputStream(in)

and added to this

Properties

 table. See the

getLocalizedInputStream

method of

Runtime

 ( 20.16.15).

Every property occupies one line of the input stream. Each line is terminated

by a line terminator (

\n

 or

\r

 or

\r\n

). Lines from the input stream are processed

until end of file is reached on the input stream.

A line that contains only whitespace ( 20.5.19) or whose first non whitespace

character is an ASCII

#

 or

!

 is ignored (thus,

#

 or

!

 indicate comment lines).

Every line other than a blank line or a comment line describes one property to

be added to the table (except that if a line ends with \, then the following line is

treated as a continuation line, as described below). The key consists of all the

characters in the line starting with the first non whitespace character and up to, but

not including, the first ASCII

=

,

:

, or whitespace character. Any whitespace after

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