1、 主函数是程序的入口，由虚拟机调用，确保类可以独立运行，是每个可执行程序必不可少的核心部分。 2、 javac是JDK提供的编译工具，用于检查Java源文件并将其编译成字节码。 3、 编写代码时可能会出现大量错误，有时修复第一个错误后，后续连锁错误也 ...

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