com.google.inject.internal.util.ObjectArrays Maven / Gradle / Ivy
/*
* Copyright (C) 2007 Google Inc.
*
* 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 com.google.inject.internal.util;
import java.lang.reflect.Array;
/**
* Static utility methods pertaining to object arrays.
*
* @author Kevin Bourrillion
*/
public final class ObjectArrays {
private ObjectArrays() {}
/**
* Returns a new array of the given length with the same type as a reference
* array.
*
* @param reference any array of the desired type
* @param length the length of the new array
*/
public static T[] newArray(T[] reference, int length) {
Class type = reference.getClass().getComponentType();
// the cast is safe because result.getClass() == reference.getClass()
@SuppressWarnings("unchecked")
T[] result = (T[]) Array.newInstance(type, length);
return result;
}
}