Reader

java.lang.Object
- Reader

All Implemented Interfaces:

java.util.Iterator<Token>
```
public class Reader
extends java.lang.Object
implements java.util.Iterator<Token>
```
A simple input stream that parses postscript files and generates a stream of Tokens. If constructed with no arguments, the Reader will process tokens from the terminal. To process tokens from a file, use the construtor that takes a String.

Constructor Summary

Constructors
Constructor	Description
`Reader()`	Constructs a reader of postscript tokens from System.in (the terminal)
`Reader(java.lang.String filename)`	Constructs a reader of postscript tokens from the file with the given filename.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type Method Description

boolean hasNext()
Check if there is a next input token

Token next()
Get the next input token
- Methods inherited from class java.lang.Object
  clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
- Methods inherited from interface java.util.Iterator
  forEachRemaining, remove

- Constructor Detail
  - Reader
```
public Reader()
```
    Constructs a reader of postscript tokens from System.in (the terminal)
  - Reader
```
public Reader(java.lang.String filename)
```
    Constructs a reader of postscript tokens from the file with the given filename.
    
    Parameters:
    
    filename - the file to read postscript tokens from
- Method Detail
  - hasNext
```
public boolean hasNext()
```
    Check if there is a next input token
    
    Specified by:
    
    hasNext in interface java.util.Iterator<Token>
    
    Returns:
    
    returns true if there are more tokens on input stream
  - next
```
public Token next()
```
    Get the next input token
    
    Specified by:
    
    next in interface java.util.Iterator<Token>
    
    Returns:
    
    consumes and returns next Token from input stream.