FilterUtil

java.lang.Object
- com.itextpdf.io.util.FilterUtil

```
public final class FilterUtil
extends java.lang.Object
```
This file is a helper class for internal usage only. Be aware that its API and functionality may be changed in future.

Field Summary

Fields
Modifier and Type Field Description

private static org.slf4j.Logger LOGGER
The Logger instance.

Constructor Summary

Constructors
Modifier Constructor Description

private FilterUtil()

Method Summary

All Methods Static Methods Concrete Methods
Modifier and Type	Method	Description
`static byte[]`	`flateDecode(byte[] input)`	Decodes a stream that has the FlateDecode filter.
`static byte[]`	`flateDecode(byte[] input, boolean strict)`	A helper to FlateDecode.
`static java.io.InputStream`	`getInflaterInputStream(java.io.InputStream input)`
`static void`	`inflateData(byte[] deflated, byte[] inflated)`	This method provides support for general purpose decompression using the popular ZLIB compression library.

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

- Field Detail
  - LOGGER
```
private static final org.slf4j.Logger LOGGER
```
    The Logger instance.
- Constructor Detail
  - FilterUtil
```
private FilterUtil()
```
- Method Detail
  - flateDecode
```
public static byte[] flateDecode(byte[] input,
                                 boolean strict)
```
    A helper to FlateDecode.
    
    Parameters:
    
    input - the input data
    
    strict - true to read a correct stream. false to try to read a corrupted stream
    
    Returns:
    
    the decoded data
  - flateDecode
```
public static byte[] flateDecode(byte[] input)
```
    Decodes a stream that has the FlateDecode filter.
    
    Parameters:
    
    input - the input data
    
    Returns:
    
    the decoded data
  - inflateData
```
public static void inflateData(byte[] deflated,
                               byte[] inflated)
```
    This method provides support for general purpose decompression using the popular ZLIB compression library.
    
    Parameters:
    
    deflated - the input data bytes
    
    inflated - the buffer for the uncompressed data
  - getInflaterInputStream
```
public static java.io.InputStream getInflaterInputStream(java.io.InputStream input)
```