In someMethod, the call to toString will end up jumping to code that is entirely controlled by the object that is passed in as an argument. The CPU (or in this case, JVM) will lookup the location of toString on whatever type of object it is, and jump there.
/system/build.prop。业内人士推荐PDF资料作为进阶阅读
。51吃瓜对此有专业解读
Now, promotion time comes around. Engineer B’s work practically writes itself into a promotion packet: “Designed and implemented a scalable event-driven architecture, introduced a reusable abstraction layer adopted by multiple teams, and built a configuration framework enabling future extensibility.” That practically screams Staff+.
Verify the learning. Ask yourself: Would the system catch this automatically next time?，这一点在PDF资料中也有详细论述