小编Che*_*han的帖子

在Java中,我理解如果两个键映射到一个值,则由于碰撞而发生线性链接.

例如:

?    Map myMap= new HashMap();   //Lets says both of them get mapped to same bucket-A and
    myMap.put("John", "Sydney");//linear chaining has occured.
    myMap.put("Mary","Mumbai"); //{key1=John}--->[val1=Sydney]--->[val2=Mumbai]

所以当我这样做时:

myMap.get("John");   // or myMap.get("Mary")

由于bucket-A包含两个值,JVM返回什么？它是否将引用返回"链"？它会回归"悉尼"吗？还是回归"孟买"？