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Java Inflater getTotalIn()用法及代碼示例



Inflater類的getTotalIn()函數返回到目前為止提供的輸入的壓縮字節總數。

函數簽名:

public int getTotalIn()

用法:


i.getTotalIn();

參數:該函數不需要參數

返回類型:該函數返回int值,該值是輸入的壓縮字節總數。

異常:該函數不會引發任何異常

範例1:使用getTotalIn()函數

// Java program to describe the use 
// of getTotalIn() function 
  
import java.util.zip.*; 
import java.io.UnsupportedEncodingException; 
  
class GFG { 
    public static void main(String args[]) 
        throws UnsupportedEncodingException, 
               DataFormatException 
    { 
  
        // compress the data 
  
        // 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); 
  
        // end 
        d.end(); 
  
        // end of compression 
  
        // use Inflater to get back the original data 
  
        // Inflater 
        Inflater i = new Inflater(); 
  
        // set the input for inflator 
        i.setInput(output); 
  
        // output bytes 
        byte inflater_output[] = new byte[1024]; 
  
        // uncompress the data 
        int org_size = i.inflate(inflater_output); 
  
        // output of inflater and deflater 
        System.out.println("Compressed output of deflater:"
                           + new String(output)); 
        System.out.println("Compressed output of Inflater:"
                           + new String(inflater_output, "UTF-8")); 
  
        // get the total number of compressed bytes input so far 
        System.out.println("Total Input value:" + i.getTotalIn()); 
  
        // end 
        i.end(); 
    } 
}

輸出:

注意:當輸入的長度大於Integer時會出現問題.MAX_VALUE然後結果可能溢出,我們應該改用getBytesRead()函數

參考: https://docs.oracle.com/javase/7/docs/api/java/util/zip/Inflater.html#getTotalIn()



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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 Inflater getTotalIn() 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。