The next line says to execute your JAR command and raise an error if unsuccessful.

下一行代码指定执行您的JAR命令，如果不成功则引发错误。

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If there is an error when the batch file runs, the command prompt displays the error message until you press a key.

在批文件运行时如果发生了什么错误，命令提示行会显示错误信息，直到您按下一个键为止。

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Otherwise, the ALTER command returns an error.

否则，ALTER 命令将返回一个错误。

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So generally, if you don't get an error message in a command line environment like this, that's good.

一般来说，如果你在命令行界面,没有收到错误信息，那就是好消息。

哈佛公开课 - 计算机科学课程节选

Other pesky problems are confusing file names, command and error messages, the PC's notorious and so far intractable complexity, and inadequate protection of privacy.

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But if the dir command results in the error message "Invalid drive specification, " go back and try again.

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Both countries have limited command and control structures, and neither has developed the technology to recall a nuclear-tipped missile fired in error.

BBC: NEWS | South Asia | Pakistan tests mid-range missile