com.sun.enterprise.admin.cli
Class Pager

java.lang.Object
  com.sun.enterprise.admin.cli.Pager

 class Pager
extends Object

Pager.java

Author:

Toby H Ferguson

Field Summary

private BufferedReader	in
private String	line
private BufferedWriter	out
private int	pageLength

Constructor Summary

Pager(int lines, Reader in, Writer out)
Construct an object which will copy one pages worth of lines at a time from the input to the the output.

Method Summary

(package private) boolean	hasNext() Indicate if there are lines left to be copied
private void	nextLine() Get the next line and copy it inot the internal buffer so's we can answer the hasNext() question
(package private) void	nextPage() Copy the next page worth of lines from input to output

Methods inherited from class java.lang.Object

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

Field Detail

in

private BufferedReader in

out

private BufferedWriter out

pageLength

private int pageLength

line

private String line

Constructor Detail

Pager

Pager(int lines,
      Reader in,
      Writer out)
throws IOException

Construct an object which will copy one pages worth of lines at a time from the input to the the output. No attempt is made under any circumstances to close the input or output.

Parameters:

lines - the number of lines in a page. A number less than 0 means copy all the input to the output.

in - the source of the copy operation

out - the destination of the copy operation

Throws:

IOException - if there's a problem reading from, or writing to, the source or destination

Method Detail

nextPage

void nextPage()
        throws IOException

Copy the next page worth of lines from input to output

Throws:

IOException

hasNext

boolean hasNext()

Indicate if there are lines left to be copied

Returns:

true iff there is at least one line left to be copied

nextLine

private void nextLine()
               throws IOException

Get the next line and copy it inot the internal buffer so's we can answer the hasNext() question

Throws:

IOException