Package org.zkoss.zel.impl.util
Class ClassUtil
- java.lang.Object
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- org.zkoss.zel.impl.util.ClassUtil
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public class ClassUtil extends java.lang.Object
Class related utilities.- Author:
- tomyeh
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Constructor Summary
Constructors Constructor Description ClassUtil()
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Method Summary
All Methods Static Methods Concrete Methods Modifier and Type Method Description static java.lang.Class<?>
forNameByThread(java.lang.String clsName)
Returns the Class object of the specified class name, using the current thread's context class loader.static java.lang.reflect.Method
getCloseMethod(java.lang.Class<?> cls, java.lang.String name, java.lang.Class<?>[] argTypes)
Gets one of the close methods -- a close method is a method with the same name and the compatible argument type.static java.lang.ClassLoader
getContextClassLoader(java.lang.Class<?> reference)
Returns the context ClassLoader for the reference class.static boolean
isInstance(java.lang.Object value, java.lang.Class<?> clz)
static java.lang.Object
newInstance(java.lang.Class<?> cls, java.lang.Object[] args)
Instantiates a new instance of the specified class with the specified argument.
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Method Detail
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getCloseMethod
public static final java.lang.reflect.Method getCloseMethod(java.lang.Class<?> cls, java.lang.String name, java.lang.Class<?>[] argTypes) throws java.lang.NoSuchMethodException
Gets one of the close methods -- a close method is a method with the same name and the compatible argument type.- Throws:
java.lang.NoSuchMethodException
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newInstance
public static final java.lang.Object newInstance(java.lang.Class<?> cls, java.lang.Object[] args) throws java.lang.NoSuchMethodException, java.lang.InstantiationException, java.lang.reflect.InvocationTargetException, java.lang.IllegalAccessException
Instantiates a new instance of the specified class with the specified argument.- Throws:
java.lang.NoSuchMethodException
java.lang.InstantiationException
java.lang.reflect.InvocationTargetException
java.lang.IllegalAccessException
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forNameByThread
public static final java.lang.Class<?> forNameByThread(java.lang.String clsName) throws java.lang.ClassNotFoundException
Returns the Class object of the specified class name, using the current thread's context class loader.- Throws:
java.lang.ClassNotFoundException
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getContextClassLoader
public static java.lang.ClassLoader getContextClassLoader(java.lang.Class<?> reference)
Returns the context ClassLoader for the reference class.Default: returns from the current thread.
Or specify the library property oforg.zkoss.lang.contextClassLoader.class
in zk.xml to provide a customized class loader.- Parameters:
reference
- the reference class where it is invoked from.- Since:
- 8.0.2
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isInstance
public static boolean isInstance(java.lang.Object value, java.lang.Class<?> clz)
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