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JavaTM 2 Platform Std. Ed. v1.4.2 |
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java.util.zip
Class Adler32
java.lang.Objectjava.util.zip.Adler32
- All Implemented Interfaces:
- Checksum
A class that can be used to compute the Adler-32 checksum of a data stream. An Adler-32 checksum is almost as reliable as a CRC-32 but can be computed much faster. 用于计算数据流的Adler-32校验和的类。Adler-32校验和几乎同CRC-32一样可靠但计算起来更快。
- See Also:
Checksum
| Constructor Summary | |
Adler32() Creates a new Adler32 object. 创建一个Adler32对象。 |
|
| Method Summary | |
long |
getValue() Returns checksum value. 返回校验和的值。 |
void |
reset() Resets checksum to initial value. 重置校验和为初始值。 |
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 checksum with specified array of bytes. 用指定的字节数组更新校验和。 |
void |
update(int b) Updates checksum with specified byte. 用指定的字节更新校验和。 |
| Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
| Constructor Detail |
Adler32
public Adler32()
- Creates a new Adler32 object. 创建一个Adler32对象。
| Method Detail |
update
public void update(int b)
- Updates checksum with specified byte. 用指定的字节更新校验和。
-
- Parameters:
b- an array of bytes（有误）用于更新校验和的字节
update
public void update(byte[] b,
int off,
int len)
- Updates checksum with specified array of bytes. 用指定的字节数组更新校验和。
-
- Parameters:
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
update
public void update(byte[] b)
- Updates checksum with specified array of bytes. 用指定的字节数组更新校验和。
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reset
public void reset()
getValue
public long getValue()
- Returns checksum value. 返回校验和的值。
-
- Returns:
- the current checksum value 当前校验和的值
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JavaTM 2 Platform Std. Ed. v1.4.2 |
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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.