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  * JBoss, Home of Professional Open Source.
  * Copyright 2011 Red Hat, Inc., and individual contributors
  * as indicated by the @author tags. 
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * See the License for the specific language governing permissions and
 * limitations under the License.
package org.jboss.logging;
import static java.lang.annotation.ElementType.PARAMETER;
import static java.lang.annotation.RetentionPolicy.CLASS;

Identifies a parameter is to be used for constructing an exception and excluded from the formatting of the message.

Parameters will be order-matched first, then type-matched to resolve ambiguity. If a match fails an error should occur.

The value() option will allow an optional class to be specified which will have to match the exact type of the parameter in question, to enable unambiguous resolution. The value must be the fully qualified class name.

James R. Perkins
public @interface Param {

Defines an exact class the parameter must match for unambiguous resolution.

the class the parameter must match.
    Class<?> value() default Object.class;
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