Class LineReader

java.lang.Object
  |
  +--LineReader

class LineReader

extends java.lang.Object

Simple class to read lines in from a file. To use, create a LineReader object, then send it the readLine() message for each line you want to read. When readLine() returns the value null, there are no lines remaining.

Constructor Summary

LineReader()           Creates a LineReader to read lines (as Strings) from a file.

LineReader(java.lang.String message)           Creates a LineReader to read lines (as Strings) from a file.

 

Method Summary
void	close()           Closes the file used by the LineReader.
java.lang.String	readLine()           Reads a line from the file defined by the constructor.

 

Methods inherited from class java.lang.Object

, clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

 

Constructor Detail

LineReader

public LineReader()

Creates a LineReader to read lines (as Strings) from a file. Calling this constructor causes a standard file dialog box to open, allowing the user to choose a file; the message "Read lines from what file?" is displayed at the top of the dialog box.

LineReader

public LineReader(java.lang.String message)

Creates a LineReader to read lines (as Strings) from a file. Calling this constructor causes a standard file dialog box to open, allowing the user to choose a file; the message is displayed at the top of the dialog box.

Parameters:

message - the message to be displayed in the dialog box.

close

public void close()

Closes the file used by the LineReader.

readLine

public java.lang.String readLine()

Reads a line from the file defined by the constructor. When there are no remaining lines, null is returned.

Returns:

the next line, or null if no lines remain.