chn.util
Class FileInput

java.lang.Object
  |
  +--chn.util.SimpleIO
        |
        +--chn.util.FileInput

public class FileInput

extends SimpleIO

Fields inherited from class chn.util.SimpleIO

delimiters, in, tokens

Constructor Summary

FileInput(java.lang.String fileName)
Constructs the FileInput object with for the given file.

FileInput(java.lang.String fileName, java.lang.String delims)
Constructs the FileInput object with for the given file.

Method Summary

void	close() Close the input file.
boolean	hasMoreLines()
boolean	hasMoreTokens() Reads ahead to verify whether there are more tokens to be read.
java.lang.String	readLine() Flushes any remaining tokens on the current input line, then reads the next full line input as a String and returns it (including an empty line).
java.lang.String	readToken() Reads and returns the next token from the current line.

Methods inherited from class chn.util.SimpleIO

readBoolean, readDouble, readInt

Methods inherited from class java.lang.Object

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

Constructor Detail

FileInput

public FileInput(java.lang.String fileName)

Constructs the FileInput object with for the given file. Uses default delimiters, space, tab, formfeed. Newline and return characters terminate the input of the current line.

FileInput

public FileInput(java.lang.String fileName,
                 java.lang.String delims)

Constructs the FileInput object with for the given file. Uses given delimiters. Newline and return characters terminate the input of the current line.

Method Detail

close

public void close()

Close the input file. Any attempt to read from this object after this function has been called will result in an error.

hasMoreLines

public boolean hasMoreLines()

Returns:

true if there are more lines to be read, otherwise false

hasMoreTokens

public boolean hasMoreTokens()

Reads ahead to verify whether there are more tokens to be read. Will read past any empty lines if the current line has no more tokens.

Returns:

true if there are unread tokens, false otherwise

readToken

public java.lang.String readToken()

Reads and returns the next token from the current line. A token is a String of characters separated by the specified delimiters. If the current input line has no more unread tokens, reads the first token from the first non-empty line entered. If there are no more unread tokens, prints an error message and terminates program.

Overrides:

readToken in class SimpleIO

Returns:

the next String token from input, as determined by delimiters

readLine

public java.lang.String readLine()

Flushes any remaining tokens on the current input line, then reads the next full line input as a String and returns it (including an empty line). If there are no more unread lines, prints an error message and terminates program.

Overrides:

readLine in class SimpleIO

Returns:

next line read as a String