Package fmpp.util
Class MiscUtil
- java.lang.Object
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- fmpp.util.MiscUtil
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public class MiscUtil extends java.lang.Object
Miscellaneous utility methods.
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Field Summary
Fields Modifier and Type Field Description static java.lang.Class[]
EMPTY_CLASS_ARRAY
static java.lang.Object[]
EMPTY_OBJECT_ARRAY
static java.lang.String[]
EMPTY_STRING_ARRAY
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Constructor Summary
Constructors Constructor Description MiscUtil()
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Method Summary
All Methods Static Methods Concrete Methods Modifier and Type Method Description static java.lang.String[]
add(java.lang.String[] a1, java.lang.String[] a2)
Concatenates two arrays.static java.lang.String
causeMessages(java.lang.Throwable e)
This is the same ascauseTrace(java.lang.Throwable)
, but it doesn't print the exception class name if the class is inside anfmpp
package.static java.lang.String
causeTrace(java.lang.Throwable e)
Returns the cause trace of an exception.static void
checkXmlSupportAvailability(java.lang.String requiredForThis)
Checks if XML API-s (JAXP, SAX2, DOM) are present.static java.lang.Class
classForName(java.lang.String className)
Tries to load the class with the current context class loader, and only then with the current defining class loader.static java.util.Map
dictionaryToMap(java.util.Dictionary dict)
static int
findObject(java.util.List list, java.lang.Object o)
Returns the first index of the given object (exactly the same instance) in the list.static java.lang.Throwable
getCauseException(java.lang.Throwable e)
static boolean
listContainsObject(java.util.List<?> list, java.lang.Object o)
Checks if the list contains the given object (exactly the same instance).static boolean
mapContainsObject(java.util.Map<?,?> map, java.lang.Object o)
Checks if the map contains the given object (exactly the same instance) as value.static int
numberToInt(java.lang.Number value)
Loseless convertion toint
.
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Method Detail
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causeMessages
public static java.lang.String causeMessages(java.lang.Throwable e)
This is the same ascauseTrace(java.lang.Throwable)
, but it doesn't print the exception class name if the class is inside anfmpp
package.
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causeTrace
public static java.lang.String causeTrace(java.lang.Throwable e)
Returns the cause trace of an exception. This is similar to a J2SE 1.4+ stack-trace, but it's shorter, because it does not contain the "at" lines.
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classForName
public static java.lang.Class classForName(java.lang.String className) throws java.lang.ClassNotFoundException
Tries to load the class with the current context class loader, and only then with the current defining class loader.- Throws:
java.lang.ClassNotFoundException
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dictionaryToMap
public static java.util.Map dictionaryToMap(java.util.Dictionary dict)
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getCauseException
public static java.lang.Throwable getCauseException(java.lang.Throwable e)
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listContainsObject
public static boolean listContainsObject(java.util.List<?> list, java.lang.Object o)
Checks if the list contains the given object (exactly the same instance).
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mapContainsObject
public static boolean mapContainsObject(java.util.Map<?,?> map, java.lang.Object o)
Checks if the map contains the given object (exactly the same instance) as value.
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findObject
public static int findObject(java.util.List list, java.lang.Object o)
Returns the first index of the given object (exactly the same instance) in the list.- Returns:
- the index of the first occurrence, or -1 if not found.
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checkXmlSupportAvailability
public static void checkXmlSupportAvailability(java.lang.String requiredForThis) throws InstallationException
Checks if XML API-s (JAXP, SAX2, DOM) are present. Can be a bit slow depending on the actual class loader setup.- Parameters:
requiredForThis
- a short sentence that describes for human reader if for what do we need the XML support (e.g."Usage of xml data loader."
or"Set XML entity resolver."
). This sentence is used in error message of theInstallationException
. Can benull
.- Throws:
InstallationException
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numberToInt
public static int numberToInt(java.lang.Number value)
Loseless convertion toint
.- Throws:
java.lang.IllegalArgumentException
- if the loseless conversion is not possible. The error message contains the details.
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add
public static java.lang.String[] add(java.lang.String[] a1, java.lang.String[] a2)
Concatenates two arrays.
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