```
public final class RollingCharBuffer
extends java.lang.Object
```
Acts like a forever growing char[] as you read characters into it from the provided reader, but internally it uses a circular buffer to only hold the characters that haven't been freed yet. This is like a PushbackReader, except you don't have to specify up-front the max size of the buffer, but you do have to periodically call freeBefore(int).

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`void`	`freeBefore(int pos)`	Call this to notify us that no chars before this absolute position are needed anymore.
`int`	`get(int pos)`
`char[]`	`get(int posStart, int length)`
`void`	`reset(java.io.Reader reader)`	Clear array and switch to new reader.

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

public void reset(java.io.Reader reader)

Clear array and switch to new reader.

public int get(int pos)
        throws java.io.IOException

public char[] get(int posStart,
                  int length)

freeBefore
```
public void freeBefore(int pos)
```
Call this to notify us that no chars before this absolute position are needed anymore.

Class RollingCharBuffer