org.usefultoys.slf4j.utils

Class ConfigParser

java.lang.Object

org.usefultoys.slf4j.utils.ConfigParser

public class ConfigParser
extends Object

Collection of utility methods to read system properties, with support for default values and typed conversion.

These methods provide safe access to system properties as String, boolean, int, and long, and include additional logic for parsing time-based values with unit suffixes (e.g., "10s", "5min").

This class is not meant to be instantiated.

Author:

Daniel Felix Ferber

Constructor Summary

Constructors

Constructor and Description
ConfigParser()

Method Summary

Modifier and Type	Method and Description
long	getMillisecondsProperty(String name, long defaultValue) Retrieves the value of a system property as a duration in milliseconds.
boolean	getProperty(String name, boolean defaultValue) Retrieves the value of a system property as a boolean.
int	getProperty(String name, int defaultValue) Retrieves the value of a system property as an integer.
long	getProperty(String name, long defaultValue) Retrieves the value of a system property as a long integer.
String	getProperty(String name, String defaultValue) Retrieves the value of a system property as a string.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

ConfigParser

public ConfigParser()

Method Detail

getProperty

public String getProperty(String name,
                          String defaultValue)

Retrieves the value of a system property as a string. If the property is not set, the default value is returned.

Parameters:

name - the name of the system property

defaultValue - the default value to return if the property is not set

Returns:

the property value as a string, or the default value if the property is not set

getProperty

public boolean getProperty(String name,
                           boolean defaultValue)

Retrieves the value of a system property as a boolean. If the property is not set, the default value is returned.

The property value is parsed using Boolean.parseBoolean(String).

Parameters:

name - the name of the system property

defaultValue - the default value to return if the property is not set

Returns:

the property value as a boolean, or the default value if the property is not set

getProperty

public int getProperty(String name,
                       int defaultValue)

Retrieves the value of a system property as an integer. If the property is not set or cannot be parsed as an integer, the default value is returned.

Parameters:

name - the name of the system property

defaultValue - the default value to return if the property is not set or invalid

Returns:

the property value as an integer, or the default value if the property is not set or invalid

getProperty

public long getProperty(String name,
                        long defaultValue)

Retrieves the value of a system property as a long integer. If the property is not set or cannot be parsed as a long, the default value is returned.

Parameters:

name - the name of the system property

defaultValue - the default value to return if the property is not set or invalid

Returns:

the property value as a long, or the default value if the property is not set or invalid

getMillisecondsProperty

public long getMillisecondsProperty(String name,
                                    long defaultValue)

Retrieves the value of a system property as a duration in milliseconds.

Supports suffixes for time units:

• ms for milliseconds
• s for seconds
• m or min for minutes
• h for hours

If the property is not set or cannot be parsed, the default value is returned.

Parameters:

name - the name of the system property

defaultValue - the default value (in milliseconds) to return if the property is not set or invalid

Returns:

the parsed duration in milliseconds, or the default value if the property is not set or invalid