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JUnit is a unit testing framework for Java, created by Erich Gamma and Kent Beck.

There is a newer version: 4.13.2

package org.junit.internal.runners.model;

import java.lang.reflect.InvocationTargetException;

/**
 * When invoked, throws the exception from the reflected method, rather than
 * wrapping it in an InvocationTargetException.
 */
public abstract class ReflectiveCallable {
    public Object run() throws Throwable {
        try {
            return runReflectiveCall();
        } catch (InvocationTargetException e) {
            throw e.getTargetException();
        }
    }

    protected abstract Object runReflectiveCall() throws Throwable;
}