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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 
*
 
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* under the terms of the GNU General Public License version 2 only, as
 
* published by the Free Software Foundation.
  
Oracle designates this
 
* particular file as subject to the "Classpath" exception as provided
 
* by Oracle in the LICENSE file that accompanied this code.
 
*
 
* This code is distributed in the hope that it will be useful, but WITHOUT
 
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 
* FITNESS FOR A PARTICULAR PURPOSE.
  
See the GNU General Public License
 
* version 2 for more details (a copy is included in the LICENSE file that
 
* accompanied this code).
 
*
 
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* 2 along with this work; if not, write to the Free Software Foundation,
 
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 
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*/
package java.util.function;

import java.util.Objects;

/**
 
* Represents an operation that accepts a single input argument and returns no
 
* result. Unlike most other functional interfaces, {@code Consumer} is expected
 
* to operate via side-effects.
 
*
 
* <p>This is a<a href="package-summary.html">functional interface</a>
 
* whose functional method is {@link #accept(Object)}.
 
*
 
* @param <T> the type of the input to the operation
 
*
 
* @since 1.8
 
*/

@FunctionalInterface
public interface Consumer<T> {

    
/**
     
* Performs this operation on the given argument.
     
*
     
* @param t the input argument
     
*/

    
void accept(T t);

    
/**
     
* Returns a composed {@code Consumer} that performs, in sequence, this
     
* operation followed by the {@code after} operation. If performing either
     
* operation throws an exception, it is relayed to the caller of the
     
* composed operation.
  
If performing this operation throws an exception,
     
* the {@code after} operation will not be performed.
     
*
     
* @param after the operation to perform after this operation
     
* @return a composed {@code Consumer} that performs in sequence this
     
* operation followed by the {@code after} operation
     
* @throws NullPointerException if {@code after} is null
     
*/

    
default Consumer<T> andThen(Consumer<? super T> after) {
        
Objects.requireNonNull(after);
        
return (T t) -> { accept(t); after.accept(t); };
    
}
}