为什么我得到了错误：无法找到符号组件？
Why am I getting error: cannot find symbol for JComponent?
youdao
因为符号位处于错误位置。
This situation occurs because the signed bit is in the wrong position.
若命题符号化是错误的，则最终的推理结果必然错误。
If symbolic notation is error, it will cause mistake of result of conclusion.
禁止错误输出符号是非常慢的。
Error suppression with is very slow.
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