Class ClassUtils
- java.lang.Object
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- org.apache.commons.discovery.tools.ClassUtils
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public class ClassUtils extends java.lang.Object
- Author:
- Richard A. Sitze
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Constructor Summary
Constructors Constructor Description ClassUtils()
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Method Summary
All Methods Static Methods Concrete Methods Modifier and Type Method Description static java.lang.reflect.Method
findPublicStaticMethod(java.lang.Class clazz, java.lang.Class returnType, java.lang.String methodName, java.lang.Class[] paramTypes)
static java.lang.String
getPackageName(java.lang.Class clazz)
Get package name.static java.lang.Object
newInstance(java.lang.Class impl, java.lang.Class[] paramClasses, java.lang.Object[] params)
Instantiate a newstatic void
setLog(org.apache.commons.logging.Log _log)
static void
verifyAncestory(java.lang.Class spi, java.lang.Class impl)
Throws exception ifimpl
does not implement or extend the SPI.
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Method Detail
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setLog
public static void setLog(org.apache.commons.logging.Log _log)
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getPackageName
public static java.lang.String getPackageName(java.lang.Class clazz)
Get package name. Not all class loaders 'keep' package information, in which case Class.getPackage() returns null. This means that calling Class.getPackage().getName() is unreliable at best.
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findPublicStaticMethod
public static java.lang.reflect.Method findPublicStaticMethod(java.lang.Class clazz, java.lang.Class returnType, java.lang.String methodName, java.lang.Class[] paramTypes)
- Returns:
- Method 'public static returnType methodName(paramTypes)', if found to be directly implemented by clazz.
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newInstance
public static java.lang.Object newInstance(java.lang.Class impl, java.lang.Class[] paramClasses, java.lang.Object[] params) throws DiscoveryException, java.lang.InstantiationException, java.lang.IllegalAccessException, java.lang.NoSuchMethodException, java.lang.reflect.InvocationTargetException
Instantiate a new- Throws:
DiscoveryException
java.lang.InstantiationException
java.lang.IllegalAccessException
java.lang.NoSuchMethodException
java.lang.reflect.InvocationTargetException
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verifyAncestory
public static void verifyAncestory(java.lang.Class spi, java.lang.Class impl) throws DiscoveryException
Throws exception ifimpl
does not implement or extend the SPI.- Throws:
DiscoveryException
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