replace value(a, name of file b, default value c[, wildcard d])

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This function searches for key a in properties file b and returns its value.

If a is not found, c will be returned.

If parameter d is set to true, keys in the property file may contain the wildcard *. See examples.

Parameters

Parameter

Description

a

Key to be searched for in b.

b

Name of the properties file.

c

Default return value if key is not found.

d

(optional) true for wildcard support. Default: false.

Examples

Assume the following properties file: 

# Country name to country code
Germany=DE
Austria=AT
New\ Zealand=NZ

Note: The backslash in "New\ Zealand" is a so-called escape character in properties file.

Parameter a

Parameter b

Parameter c

Parameter d

Result

Germany

./conf/replacements.properties

Somewhere

DE

Austria

./conf/replacements.properties

Somewhere

AT

New Zealand

./conf/replacements.properties

Somewhere

NZ

Dreamland

./conf/replacements.properties

Somewhere

Somewhere

Assume another properties file instead:

# Shortcuts for names
Invoice*=Invoice address
Number*=Number range

Parameter a

Parameter b

Parameter c

Parameter d

Result

Invoices

./conf/replacements.properties

Nothing

true

Invoice address

Invoices

./conf/replacements.properties

Nothing

false

Nothing