org.modelmapper.internal.util.Stack Maven / Gradle / Ivy
/*
* Copyright 2011 the original author or authors.
*
* 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 org.modelmapper.internal.util;
import java.util.ArrayList;
/**
* LIFO Stack semantics around an ArrayList for random access support. Indexed access via
* {@link #get(int)} and iteration via {@link #iterator()} is in reverse order (FIFO). Not
* threadsafe.
*
* @author Jonathan Halterman
*/
public class Stack extends ArrayList {
private static final long serialVersionUID = 0L;
/**
* Pushes to the top of the stack.
*/
public void push(T element) {
add(element);
}
/**
* Pops from the top of the stack.
*/
public T pop() {
return remove(size() - 1);
}
/**
* Peeks at the top of the stack.
*/
public T peek() {
return get(size() - 1);
}
}