Package net.sf.jasperreports.engine.util

Class ClassUtils

  • public final class ClassUtils
extends java.lang.Object
    Class utilities.
    Author:
    Lucian Chirita (lucianc@users.sourceforge.net)

    • Field Detail

      • EXCEPTION_MESSAGE_KEY_CLASS_INSTANCE_ERROR

        public static final java.lang.String EXCEPTION_MESSAGE_KEY_CLASS_INSTANCE_ERROR
        See Also:
        Constant Field Values

      • EXCEPTION_MESSAGE_KEY_CLASS_LOADING_ERROR

        public static final java.lang.String EXCEPTION_MESSAGE_KEY_CLASS_LOADING_ERROR
        See Also:
        Constant Field Values

      • EXCEPTION_MESSAGE_KEY_CLASS_UNEXPECTED_TYPE

        public static final java.lang.String EXCEPTION_MESSAGE_KEY_CLASS_UNEXPECTED_TYPE
        See Also:
        Constant Field Values

    • Method Detail

      • instantiateClass

        public static final java.lang.Object instantiateClass​(java.lang.String className,
                                                      java.lang.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

      • getInterfaces

        public static java.util.List<java.lang.Class<?>> getInterfaces​(java.lang.Class<?> clazz)
        Parameters:
        clazz -
        Returns:
        a list of interfaces implemented by this class and by its superclasses, or an empty list in case there are no implemented interfaces