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 * Copyright 2015-2020 the original author or authors.
 *
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package org.junit.jupiter.api.function;

import static org.apiguardian.api.API.Status.STABLE;

import org.apiguardian.api.API;

ThrowingConsumer is a functional interface that can be used to implement any generic block of code that consumes an argument and potentially throws a Throwable.

The ThrowingConsumer interface is similar to Consumer, except that a ThrowingConsumer can throw any kind of exception, including checked exceptions.

Rationale for throwing Throwable instead of Exception

Although Java applications typically throw exceptions that are instances of Exception, RuntimeException, Error, or AssertionError (in testing scenarios), there may be use cases where a ThrowingConsumer needs to explicitly throw a Throwable. In order to support such specialized use cases, accept is declared to throw Throwable.

Type parameters:
  • <T> – the type of argument consumed
See Also:
Since:5.0
/** * {@code ThrowingConsumer} is a functional interface that can be used to * implement any generic block of code that consumes an argument and * potentially throws a {@link Throwable}. * * <p>The {@code ThrowingConsumer} interface is similar to * {@link java.util.function.Consumer}, except that a {@code ThrowingConsumer} * can throw any kind of exception, including checked exceptions. * * <h4>Rationale for throwing {@code Throwable} instead of {@code Exception}</h4> * * <p>Although Java applications typically throw exceptions that are instances * of {@link java.lang.Exception}, {@link java.lang.RuntimeException}, * {@link java.lang.Error}, or {@link java.lang.AssertionError} (in testing * scenarios), there may be use cases where a {@code ThrowingConsumer} needs to * explicitly throw a {@code Throwable}. In order to support such specialized * use cases, {@link #accept} is declared to throw {@code Throwable}. * * @since 5.0 * @param <T> the type of argument consumed * @see java.util.function.Consumer * @see org.junit.jupiter.api.DynamicTest#stream * @see Executable * @see ThrowingSupplier */
@FunctionalInterface @API(status = STABLE, since = "5.0") public interface ThrowingConsumer<T> {
Consume the supplied argument, potentially throwing an exception.
Params:
  • t – the argument to consume
/** * Consume the supplied argument, potentially throwing an exception. * * @param t the argument to consume */
void accept(T t) throws Throwable; }