Answers a boolean indicating whether or not this PrintStream has encountered an error. If so, the receiver should probably be closed since further writes will not actually take place. A side effect of calling checkError is that the target OutputStream is flushed.
@return true if an error occurred in this PrintStream,false otherwise.
Answers a boolean indicating whether or not this PrintWriter has encountered an error. If so, the receiver should probably be closed since further writes will not actually take place. A side effect of calling checkError is that the target Writer is flushed.
@return boolean has an error occurred in this PrintWriter.
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