java.util.zip中Deflater類的getAdler()函數返回未壓縮數據的Adler-32值。 Adler-32是一種校驗和算法,已被廣泛使用的zlib壓縮庫。
函數簽名:
public int getAdler()
用法:
d.getAdler();
參數:該函數不需要參數
返回類型:該函數返回一個整數值,該值是未壓縮數據的Adler-32值。
異常:該函數不會引發任何異常
範例1:
// Java program to describe the use
// of finished() function
import java.util.zip.*;
import java.io.UnsupportedEncodingException;
class GFG {
public static void main(String args[])
throws UnsupportedEncodingException
{
// deflater
Deflater d = new Deflater();
// get the text
String pattern = "GeeksforGeeks", text = "";
// generate the text
for (int i = 0; i < 4; i++)
text += pattern;
// set the input for deflator
d.setInput(text.getBytes("UTF-8"));
// finish
d.finish();
// output bytes
byte output[] = new byte[1024];
// compress the data
int size = d.deflate(output);
// compressed String
System.out.println("Compressed String:"
+ new String(output)
+ "\n Size " + size);
// original String
System.out.println("Original String:" + text
+ "\n Size " + text.length());
// get Adler-32 value
System.out.println("Adler-32 value:"
+ d.getAdler());
// end
d.end();
}
}
輸出:
Compressed String:x?sOM?.N?/r???q?? Size 21 Original String:GeeksforGeeksGeeksforGeeksGeeksforGeeksGeeksforGeeks Size 52 Adler-32 value:511972501
參考: https://docs.oracle.com/javase/7/docs/api/java/util/zip/Deflater.html#getAdler()
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注:本文由純淨天空篩選整理自andrew1234大神的英文原創作品 Deflater getAdler() function in Java with examples。非經特殊聲明,原始代碼版權歸原作者所有,本譯文未經允許或授權,請勿轉載或複製。