[/url] [url=file:///F:/资料/文字资料/j2sdk-1_4_2-doc/docs/api/overview-summary.html]Overview
Class
JavaTM 2 Platform
Std. Ed. v1.4.2
SUMMARY: NESTED | FIELD | CONSTR | METHOD
DETAIL: FIELD | CONSTR | METHOD
java.util.zip
Class CRC32java.lang.Object
All Implemented Interfaces: Checksum public class CRC32 extends Object implements ChecksumA class that can be used to compute the CRC-32 of a data stream. 用于计算数据流的CRC-32校验和的类。
See Also: ChecksumConstructor Summary
CRC32()
Creates a new CRC32 object. 创建一个CRC-32对象。
Method Summary
long
getValue()
Returns CRC-32 value. 返回CRC-32值。
void
reset()
Resets CRC-32 to initial value. 重置CRC-32初始值。
void
)]update(byte[] b)
Updates checksum with specified array of bytes. 用指定的字节数组更新校验和。
void
,]update(byte[] b, int off, int len)
Updates CRC-32 with specified array of bytes. 用指定的字节数组更新CRC-32。
void
update(int b)
Updates CRC-32 with specified byte. 用指定的字节更新CRC-32。
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
Constructor Detail
CRC32public CRC32()
Creates a new CRC32 object. 创建一个CRC-32对象。
Method Detail
updatepublic void update(int b)
Updates CRC-32 with specified byte. 用指定的字节更新CRC-32。
Specified by: update in interface ChecksumParameters: b - the byte to update the checksum with 用于更新校验和的字节updatepublic void update(byte[] b,
int off,
int len)
Updates CRC-32 with specified array of bytes. 用指定的字节数组更新CRC-32。
Specified by: ,]update in interface ChecksumParameters: b - the byte array to update the checksum with 用于更新校验和的字节数组 off - the start offset of the data 数据起始偏移 len - the number of bytes to use for the update 用于更新的字节数updatepublic void update(byte[] b)
Updates checksum with specified array of bytes. 用指定的字节数组更新校验和。
Parameters: b - the array of bytes to update the checksum with 用于更新校验和的字节数组resetpublic void reset()
Resets CRC-32 to initial value. 重置CRC-32初始值。
Specified by: reset in interface ChecksumgetValuepublic long getValue()
Returns CRC-32 value. 返回CRC-32值。
Specified by: getValue in interface ChecksumReturns: the current checksum value 当前校验和的值[/url][url=file:///F:/资料/文字资料/j2sdk-1_4_2-doc/docs/api/overview-summary.html]Overview
Class
JavaTM 2 Platform
Std. Ed. v1.4.2
SUMMARY: NESTED | FIELD | CONSTR | METHOD
DETAIL: FIELD | CONSTR | METHOD
For further API reference and developer documentation, see Java 2 SDK SE Developer Documentation. That documentation contains more detailed, developer-targeted descriptions, with conceptual overviews, definitions of terms, workarounds, and working code examples. Copyright 2003 Sun Microsystems, Inc. All rights reserved. Use is subject to license terms. Also see the documentation redistribution policy.
