net.sf.jasperreports.engine.util

Class ClassUtils

java.lang.Object

net.sf.jasperreports.engine.util.ClassUtils

public final class ClassUtils
extends Object

Class utilities.

Author:

Lucian Chirita (lucianc@users.sourceforge.net)

Field Summary

Fields

Modifier and Type	Field and Description
static String	EXCEPTION_MESSAGE_KEY_CLASS_INSTANCE_ERROR
static String	EXCEPTION_MESSAGE_KEY_CLASS_LOADING_ERROR
static String	EXCEPTION_MESSAGE_KEY_CLASS_UNEXPECTED_TYPE

Method Summary

Methods

Modifier and Type	Method and Description
static Object	instantiateClass(String className, Class<?> expectedType) Instantiates a class.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

EXCEPTION_MESSAGE_KEY_CLASS_INSTANCE_ERROR

public static final String EXCEPTION_MESSAGE_KEY_CLASS_INSTANCE_ERROR

See Also:

Constant Field Values

EXCEPTION_MESSAGE_KEY_CLASS_LOADING_ERROR

public static final String EXCEPTION_MESSAGE_KEY_CLASS_LOADING_ERROR

See Also:

Constant Field Values

EXCEPTION_MESSAGE_KEY_CLASS_UNEXPECTED_TYPE

public static final String EXCEPTION_MESSAGE_KEY_CLASS_UNEXPECTED_TYPE

See Also:

Constant Field Values

Method Detail

instantiateClass

public static final Object instantiateClass(String className,
                      Class<?> expectedType)

Instantiates a class.

The class is expected to have a public no-argument constructor.

Parameters:

className - the class name

expectedType - the expected (super) type of the result

Returns:

a newly created instance of the specified class

Throws:

JRRuntimeException - if the class cannot be loaded or instantiated, or if it does not implement the expected type