类声明 public class ArrayList<E> extends AbstractList<E> implements List<E>, RandomAccess, Cloneable, java.io.Serializable public class LinkedList<E> extends AbstractSequentialList<E> implements List<E>, Deque<E>, Cloneable, java.io.Serializable 其中 public abstract class AbstractSequentialList<E> extends
被测试代码 package org.agoncal.sample.jmh; /** * Created by emacsist on 2017/6/16. */ public class StringAppend { public static String defaultBuilder(int len) { StringBuilder sb = new StringBuilder();