如果生成的字节码指令序列的任何细节有误，那么把包含这个字节码的类装入jvm时，检验就会失败。

If any detail of a generated bytecode instruction sequence is wrong, the class containing that bytecode will fail verification when you attempt to load it into a JVM.

youdao

它使用堆栈体系结构，这意味着在使用指令操作数之前要先将它们装入内部堆栈。

It USES a stack architecture, meaning instruction operands are loaded to an internal stack before they're used.

youdao