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java.lang.Objectorg.crosswire.common.util.ClassUtil
public final class ClassUtil
Various Java Class Utilities.
for license details.
The copyright to this program is held by it's authors.
Field Summary | |
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private static String |
DEFAULT
The string for default implementations |
private static String |
EXTENSION_CLASS
|
private static String |
EXTENSION_JAR
|
private static String |
EXTENSION_ZIP
|
private static char |
INNER_CLASS_SEPARATOR_CHAR
The inner class separator character: $ . |
private static Logger |
log
The log stream |
private static char |
PACKAGE_SEPARATOR_CHAR
The package separator character: . . |
Constructor Summary | |
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private |
ClassUtil()
Prevent Instansiation |
Method Summary | |
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static String |
findClasspathEntry(String classname)
This function find the first matching filename for a Java class file from the classpath, if none is found it returns null. |
static String |
findClasspathEntry(String classname,
String classpath)
This function finds the first matching filename for a Java class file from the classpath, if none is found it returns null. |
static Object |
getImplementation(Class clazz)
Get and instantiate the preferred implementor of some interface or abstract class. |
static Class |
getImplementor(Class clazz)
Get the preferred implementor of some interface or abstract class. |
static Class[] |
getImplementors(Class clazz)
Get the known implementors of some interface or abstract class. |
static Map |
getImplementorsMap(Class clazz)
Get a map of known implementors of some interface or abstract class. |
static String |
getShortClassName(Class cls)
Gets the class name minus the package name from a Class . |
static String |
getShortClassName(Object object,
String valueIfNull)
Gets the class name minus the package name for an Object . |
static String |
getShortClassName(String className)
Gets the class name minus the package name from a String. |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Field Detail |
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private static final char PACKAGE_SEPARATOR_CHAR
The package separator character: .
.
private static final char INNER_CLASS_SEPARATOR_CHAR
The inner class separator character: $
.
private static final String EXTENSION_CLASS
private static final String EXTENSION_JAR
private static final String EXTENSION_ZIP
private static final Logger log
private static final String DEFAULT
Constructor Detail |
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private ClassUtil()
Method Detail |
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public static String findClasspathEntry(String classname, String classpath)
public static String findClasspathEntry(String classname)
public static Class[] getImplementors(Class clazz)
clazz
- The class or interface to find implementors of.
public static Map getImplementorsMap(Class clazz)
clazz
- The class or interface to find implementors of.
getImplementors(Class)
public static Class getImplementor(Class clazz) throws IOException, ClassNotFoundException, ClassCastException
clazz
- The class or interface to find an implementation of.
MalformedURLException
- if the properties file can not be found
IOException
- if there is a problem reading the found file
ClassNotFoundException
- if the read contents are not found
ClassCastException
- if the read contents are not validgetImplementors(Class)
public static Object getImplementation(Class clazz) throws MalformedURLException, ClassCastException, IOException, ClassNotFoundException, InstantiationException, IllegalAccessException
clazz
- The class or interface to find an implementation of.
MalformedURLException
- if the properties file can not be found
IOException
- if there is a problem reading the found file
ClassNotFoundException
- if the read contents are not found
ClassCastException
- if the read contents are not valid
InstantiationException
- if the new object can not be instantiated
IllegalAccessException
- if the new object can not be instantiatedgetImplementors(Class)
public static String getShortClassName(Object object, String valueIfNull)
Gets the class name minus the package name for an Object
.
object
- the class to get the short name for, may be nullvalueIfNull
- the value to return if null
public static String getShortClassName(Class cls)
Gets the class name minus the package name from a Class
.
cls
- the class to get the short name for, must not be
null
IllegalArgumentException
- if the class is null
public static String getShortClassName(String className)
Gets the class name minus the package name from a String.
The string passed in is assumed to be a class name - it is not checked.
className
- the className to get the short name for,
must not be empty or null
IllegalArgumentException
- if the className is empty
|
Copyright ยจ 2003-2007 | |||||||||
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