com.meyling.principia.io
Class TextFileReader

java.lang.Object
  |
  +--com.meyling.principia.io.TextFileReader

Direct Known Subclasses:

PackageTest.TestReader, PackageTest.TestReader

public class TextFileReader

extends Object

Wrapper for the class FileReader.

Version:

$Revision 0.00.50$

Author:

Michael Meyling

Field Summary

private boolean	alreadyRead is there a row in the read buffer?
private BufferedReader	in file to read from
private String	inFileName file name
private String	line last read line
private int	lineNumber line counter

Constructor Summary

TextFileReader(String inputName)
Creates a TextFileReader object.

Method Summary

void	close() Closes input.
String	getInFileName() Get name of input file.
String	getLine() Get currently read line.
int	getLineNumber() Get currently read line number.
String	readLine() For simple reading a complete line of the input file.
void	unReadLine() Undos the readLine() method.

Methods inherited from class java.lang.Object

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

Field Detail

in

private BufferedReader in

file to read from

inFileName

private String inFileName

file name

lineNumber

private int lineNumber

line counter

line

private String line

last read line

alreadyRead

private boolean alreadyRead

is there a row in the read buffer? Is used to undo the reading of a singular line.

Constructor Detail

TextFileReader

public TextFileReader(String inputName)
               throws IOException

Creates a TextFileReader object.

Parameters:

inputName - name of the input file

Throws:

IOException - if the buffered reader couldn't be created

Method Detail

close

public void close()

Closes input.

readLine

public String readLine()
                throws IOException

For simple reading a complete line of the input file. The line is stored in the class attribut line Comments are ignored

Returns:

eingelesene Zeile

Throws:

IOException - wenn ein Lesefehler auftrat

unReadLine

public void unReadLine()
                throws IllegalStateException

Undos the readLine() method. Only one readLine() call can be cancelled. Further calls lead to an IllegalStateException. A following readLine() call gives the last result again.

Throws:

IllegalStateException - if undo isn't allowed any more

getLine

public String getLine()

Get currently read line.

Returns:

currently read line

getLineNumber

public int getLineNumber()

Get currently read line number.

Returns:

currently read line number

getInFileName

public String getInFileName()

Get name of input file.

Returns:

name of input file