Examlex
Translate the phrase to an algebraic expression.
-Two times x
System.out
System.out in Java refers to the standard output stream, typically the console, which is used for outputting data to the user.
System.in
A standard input stream in Java, typically used to read input from the console provided by the user.
System.err
A standard error output stream in Java, used to send error messages and diagnostic output to the console.
File Class
In programming, a representation of file handling constructs that allow for reading from and writing to files.
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