Java LinkedList - differences between retrieve operations

Returning null + removing operations: poll(), pollFirst().

Returning null + not removing operations: peek(), peekFirst().

Throwing exception + removing operations: pop(), remove(), removeFirst().

Throwing exception + not removing operations: element(), getFirst().

reference： http://stackoverflow.com/questions/14851367/java-linkedlist-differences-between-retrieve-operations

Java LinkedList - differences between retrieve operations

原文：http://www.cnblogs.com/hygeia/p/5087617.html