Pacer (Parent module for everything of interest. 5.6 API)

java.lang.Object
- edu.uiuc.ncsa.security.core.util.Pacer

```
public class Pacer
extends Object
```
A class used in command line utilities. This has little thingies pacing back and forth in front of the user -- it's an ASCII status bar.
Usual use

For a long-running task, rather than have the user stare at the screen and having them wonder if the app has hung, start a thread with the task, register this as a listener, then start this. It will pace back and forth until it gets notified the task is done.

Invoke the main method of this to see a demo. Note that the pacing should happen on one line. There are some monitors where this does not do that due to how Java is implemented.

Created by Jeff Gaynor
on 3/26/20 at 10:36 AM

Constructor Summary

Constructors
Constructor Description

Pacer(int n)
This sets how wide the pacer will be ( = 2*n).

Pacer(String message)

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`void`	`clear()`	Clears the current line of text.
`static void`	`main(String[] args)`	How to use it example.
`void`	`pace()`	Causes the pacer to pace once.
`void`	`pace(long items)`
`void`	`pace(long items, String tail)`	This will pace, and put a number + message after the pace line.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - Pacer
```
public Pacer(int n)
```
    This sets how wide the pacer will be ( = 2*n). Be sure to leave space for any comments. A good value is 20.
  - Pacer
```
public Pacer(String message)
```
- Method Detail
  - clear
```
public void clear()
```
    Clears the current line of text. Call this when you want to clear where pacer was.
  - pace
```
public void pace()
```
    Causes the pacer to pace once.
  - pace
```
public void pace(long items,
                 String tail)
```
    This will pace, and put a number + message after the pace line. Typical might be pace(counter++, "records read") Which might put out
    .../.....................\... 1234 records read
    
    Parameters:
    
    items - long
    
    tail - java.lang.String
  - pace
```
public void pace(long items)
```
  - main
```
public static void main(String[] args)
                 throws InterruptedException
```
    How to use it example.
    
    Parameters:
    
    args -
    
    Throws:
    
    InterruptedException