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Deflater getTotalOut() function in Java with examples

  • Last Updated : 24 Jun, 2019


The getTotalOut() function of the Deflater class in java.util.zip returns the total number of compressed bytes Output provided till now.

Function Signature:

public int getTotalOut()

Syntax:

d.getTotalOut();

Parameter: The function requires no parameter

Return Type: The function returns an int value which is the total number of compressed bytes Output.



Exception: The function does not throw any exception

Example 1:




// Java program to describe the use
// of getTotalOut() 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 the total number of
        // compressed bytes Output so far
        System.out.println("Total Output value :"
                           + d.getTotalOut());
  
        // end
        d.end();
    }
}

Output:

Compressed String :x?sOM?.N?/r???q??
 Size 21
Original String :GeeksforGeeksGeeksforGeeksGeeksforGeeksGeeksforGeeks
 Size 52
Total Output value :21

Note: The problem arises when the length of the input is greater than Integer.MAX_VALUE. Then the result may overflow, we should use getBytesRead() function instead

Reference: https://docs.oracle.com/javase/7/docs/api/java/util/zip/Deflater.html#getTotalOut()

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