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Showing content from http://docs.oracle.com/javase/8/docs/api/java/util/zip/CheckedInputStream.html below:

CheckedInputStream (Java Platform SE 8 )

java.lang.Object
- java.io.InputStream
- - java.io.FilterInputStream
  - - java.util.zip.CheckedInputStream

All Implemented Interfaces:

Closeable, AutoCloseable
```
public class CheckedInputStream
extends FilterInputStream
```
An input stream that also maintains a checksum of the data being read. The checksum can then be used to verify the integrity of the input data.

See Also:

Checksum

- Field Summary
  - Fields inherited from class java.io.FilterInputStreamin
- Constructor Summary
- Method Summary
  - Methods inherited from class java.io.FilterInputStreamavailable, close, mark, markSupported, read, reset
  - Methods inherited from class java.lang.Objectclone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - CheckedInputStream
```
public CheckedInputStream(InputStream in,
                          Checksum cksum)
```
    Creates an input stream using the specified Checksum.
    
    Parameters:
    
    in - the input stream
    
    cksum - the Checksum
- Method Detail
  - read
```
public int read()
         throws IOException
```
    Reads a byte. Will block if no input is available.
    
    Overrides:
    
    read in class FilterInputStream
    
    Returns:
    
    the byte read, or -1 if the end of the stream is reached.
    
    Throws:
    
    IOException - if an I/O error has occurred
    
    See Also:
    
    FilterInputStream.in
  - read
```
public int read(byte[] buf,
                int off,
                int len)
         throws IOException
```
    Reads into an array of bytes. If len is not zero, the method blocks until some input is available; otherwise, no bytes are read and 0 is returned.
    
    Overrides:
    
    read in class FilterInputStream
    
    Parameters:
    
    buf - the buffer into which the data is read
    
    off - the start offset in the destination array b
    
    len - the maximum number of bytes read
    
    Returns:
    
    the actual number of bytes read, or -1 if the end of the stream is reached.
    
    Throws:
    
    NullPointerException - If buf is null.
    
    IndexOutOfBoundsException - If off is negative, len is negative, or len is greater than buf.length - off
    
    IOException - if an I/O error has occurred
    
    See Also:
    
    FilterInputStream.in
  - skip
```
public long skip(long n)
          throws IOException
```
    Skips specified number of bytes of input.
    
    Overrides:
    
    skip in class FilterInputStream
    
    Parameters:
    
    n - the number of bytes to skip
    
    Returns:
    
    the actual number of bytes skipped
    
    Throws:
    
    IOException - if an I/O error has occurred
  - getChecksum
```
public Checksum getChecksum()
```
    Returns the Checksum for this input stream.
    
    Returns:
    
    the Checksum value

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