Package org.apache.groovy.util
Class SystemUtil
- java.lang.Object
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- org.apache.groovy.util.SystemUtil
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public class SystemUtil extends Object
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Constructor Summary
Constructors Constructor Description SystemUtil()
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Method Summary
All Methods Static Methods Concrete Methods Modifier and Type Method Description static booleangetBooleanSafe(String name)Retrieves a Boolean System property, or returns false if: the property isn't found the property name is null or empty if a security manager exists and its checkPropertyAccess method doesn't allow access to the specified system property.static IntegergetIntegerSafe(String name, Integer def)Retrieves an Integer System propertystatic LonggetLongSafe(String name, Long def)Retrieves an Long System propertystatic StringgetSystemPropertySafe(String name)Retrieves a System property, or null if: the property isn't found the property name is null or empty if a security manager exists and its checkPropertyAccess method doesn't allow access to the specified system property.static StringgetSystemPropertySafe(String name, String defaultValue)Retrieves a System property, or returns some default value if: the property isn't found the property name is null or empty if a security manager exists and its checkPropertyAccess method doesn't allow access to the specified system property.static StringsetSystemPropertyFrom(String nameValue)Sets a system property from aname=valueString.static StringsetSystemPropertyFromSafe(String nameValue)Sets a system property from aname=valueString.
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Method Detail
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setSystemPropertyFrom
public static String setSystemPropertyFrom(String nameValue)
Sets a system property from aname=valueString. If no '=' is found, the property is assumed to be a Boolean flag with valuetrue.- Parameters:
nameValue- the non-null name=value String- Returns:
- the found name
- Throws:
IllegalArgumentException- if nameValue is null
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setSystemPropertyFromSafe
public static String setSystemPropertyFromSafe(String nameValue)
Sets a system property from aname=valueString. If no '=' is found, the property is assumed to be a Boolean flag with valuetrue. Does nothing if a Security manager is in place which doesn't allow the operation.- Parameters:
nameValue- the non-null name=value String- Returns:
- the found property name or null if the operation wasn't successful
- Throws:
IllegalArgumentException- if nameValue is null
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getSystemPropertySafe
public static String getSystemPropertySafe(String name, String defaultValue)
Retrieves a System property, or returns some default value if:- the property isn't found
- the property name is null or empty
- if a security manager exists and its checkPropertyAccess method doesn't allow access to the specified system property.
- Parameters:
name- the name of the system property.defaultValue- a default value.- Returns:
- value of the system property or the default value
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getSystemPropertySafe
public static String getSystemPropertySafe(String name)
Retrieves a System property, or null if:- the property isn't found
- the property name is null or empty
- if a security manager exists and its checkPropertyAccess method doesn't allow access to the specified system property.
- Parameters:
name- the name of the system property.- Returns:
- value of the system property or null
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getBooleanSafe
public static boolean getBooleanSafe(String name)
Retrieves a Boolean System property, or returns false if:- the property isn't found
- the property name is null or empty
- if a security manager exists and its checkPropertyAccess method doesn't allow access to the specified system property.
- Parameters:
name- the name of the system property.- Returns:
- value of the Boolean system property or false
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getIntegerSafe
public static Integer getIntegerSafe(String name, Integer def)
Retrieves an Integer System property- Parameters:
name- the name of the system property.def- the default value- Returns:
- value of the Integer system property or the default value
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