在翻看 Java 1.8 源码发现，LinkedList 里面 checkElementIndex 和 checkPositionIndex 的实现基本一致，那是出于什么目的去实现两个方法呢？

The most significant addition to the Java language since Sun Microsystems rewrote the collections API for Java 5 is the introduction of Java records. Java records address two significant pain points ...