問二：你瞭解JAVA的內存模型（JMM）嗎？

原理圖：      注：java8中，已經將常量池移動到堆中   部件詳解：     舉例：執行add(1,2) Method area is created on virtual machine startup, shared among all Java virtual machine threads and it is logically part of heap area. It stor

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