io.netty.util.BooleanSupplier Maven / Gradle / Ivy
/*
* Copyright 2016 The Netty Project
*
* The Netty Project licenses this file to you 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:
*
* https://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
*/
package io.netty.util;
/**
* Represents a supplier of {@code boolean}-valued results.
*/
public interface BooleanSupplier {
/**
* Gets a boolean value.
* @return a boolean value.
* @throws Exception If an exception occurs.
*/
boolean get() throws Exception;
/**
* A supplier which always returns {@code false} and never throws.
*/
BooleanSupplier FALSE_SUPPLIER = new BooleanSupplier() {
@Override
public boolean get() {
return false;
}
};
/**
* A supplier which always returns {@code true} and never throws.
*/
BooleanSupplier TRUE_SUPPLIER = new BooleanSupplier() {
@Override
public boolean get() {
return true;
}
};
}