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Core YAML 1.2 parser and emitter for Java

There is a newer version: 2.9

/**
 * Copyright (c) 2018, http://www.snakeyaml.org
 * 
 * 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.snakeyaml.engine.v2.common;

import java.util.ArrayList;

/**
 * General stack implementation.
 */
public class ArrayStack {
    private final ArrayList stack;

    /**
     * Create empty stack
     *
     * @param initSize - the initial size of the stack
     */
    public ArrayStack(int initSize) {
        stack = new ArrayList<>(initSize);
    }

    public void push(T obj) {
        stack.add(obj);
    }

    public T pop() {
        return stack.remove(stack.size() - 1);
    }

    public boolean isEmpty() {
        return stack.isEmpty();
    }
}