[Chapter 31] 31.12 java.util.zip.InflaterInputStream (JDK 1.1)

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| Chapter 31 The java.util.zip Package |

## 31.12 java.util.zip.InflaterInputStream (JDK 1.1)

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This class is a subclass of `java.io.FilterInputStream`; it reads a specified stream of compressed input data (typically one that was written with `DeflaterOutputStream` or a subclass) and "filters" that data by uncompressing ("inflating") it. To create an `InflaterInputStream`, you must specify the input stream it is to read from, and also an `Inflater` object that is to perform the uncompresssion. Once an `InflaterInputStream` is created, the `read()` and `skip()` methods are the same as those of other input streams.

Note that the `InflaterInputStream` uncompresses raw data. Applications often prefer one of its subclasses, `GZIPInputStream` or `ZipInputStream`, which work with compressed data written in the standard gzip and PKZip file formats.

    public class InflaterInputStream extends FilterInputStream {
        // Public Constructors
                public InflaterInputStream(InputStream in, Inflater inf, int size);
                public InflaterInputStream(InputStream in, Inflater inf);
                public InflaterInputStream(InputStream in);
        // Protected Instance Variables
                protected byte[] buf;
                protected Inflater inf;
                protected int len;
        // Public Instance Methods
                public int read() throws IOException;  // Overrides FilterInputStream
                public int read(byte[] b, int off, int len) throws IOException;  // Overrides FilterInputStream
                public long skip(long n) throws IOException;  // Overrides FilterInputStream
        // Protected Instance Methods
                protected void fill() throws IOException;
    }

### Hierarchy:

Object->InputStream->FilterInputStream->InflaterInputStream

### Extended By:

GZIPInputStream, ZipInputStream

java.util.zip.Inflater (JDK 1.1) |  | java.util.zip.ZipEntry (JDK 1.1)