net.openhft.chronicle.hash.impl.util.Objects Maven / Gradle / Ivy
/*
* Copyright 2012-2018 Chronicle Map Contributors
*
* 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
*
* http://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 net.openhft.chronicle.hash.impl.util;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;
import java.util.Arrays;
/**
* java.util.Objects since Java 7
*/
public final class Objects {
private Objects() {
}
public static int hash(Object... values) {
return Arrays.hashCode(values);
}
public static boolean equal(@Nullable Object a, @Nullable Object b) {
return a != null ? a.equals(b) : b == null;
}
public static boolean builderEquals(@NotNull Object builder, @Nullable Object o) {
return builder == o ||
o != null && builder.getClass() == o.getClass() &&
builder.toString().equals(o.toString());
}
public static void requireNonNull(Object obj) {
if (obj == null)
throw new NullPointerException();
}
}