File	Doc	Category	Size	Date	Package
CRC32.java	API Doc	Android 1.5 API	2967	Wed May 06 22:41:02 BST 2009	java.util.zip

CRC32

• java.lang.Object

Fields Summary
private long	crc
long	tbytes

Constructors Summary

Methods Summary
public long	getValue() Returns the CRC32 checksum for all input received. return The checksum for this instance. since Android 1.0 return crc;
public void	reset() Resets the CRC32 checksum to it initial state. since Android 1.0 tbytes = crc = 0;
public void	update(int val) Updates this checksum with the byte value provided as integer. param val represents the byte to update the checksum. since Android 1.0 crc = updateByteImpl((byte) val, crc);
public void	update(byte[] buf) Updates this checksum with the bytes contained in buffer {@code buf}. param buf the buffer holding the data to update the checksum with. since Android 1.0 update(buf, 0, buf.length);
public void	update(byte[] buf, int off, int nbytes) Updates this checksum with n bytes of data obtained from buffer {@code buf}, starting at offset {@code off}. param buf the buffer to update the checksum. param off the offset in {@code buf} to obtain data from. param nbytes the number of bytes to read from {@code buf}. since Android 1.0 // avoid int overflow, check null buf if (off <= buf.length && nbytes >= 0 && off >= 0 && buf.length - off >= nbytes) { tbytes += nbytes; crc = updateImpl(buf, off, nbytes, crc); } else { throw new ArrayIndexOutOfBoundsException(); }
private native long	updateByteImpl(byte val, long crc1)
private native long	updateImpl(byte[] buf, int off, int nbytes, long crc1)