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ZipFile getComment() function in Java with examples
  • Last Updated : 06 Mar, 2019

The getComment() function is a part of java.util.zip package. The function returns a string which is the comment of the zip file.

Function Signature:

public String getComment()

Syntax:

zip_file.getComment();

Parameters: The function does not require any parameters
Return value: The function returns a String, which is the comment of the zip file

Exceptions: The function throws IllegalStateException if the zip file has been closed



Below programs illustrates the use of getComment() function

Example 1: Create a file named zip_file and get the comment using getComment() function.”file.zip” is a zip file present in f: directory.




// Java program to demonstrate the
// use of getComment() function
  
import java.util.zip.*;
  
public class solution {
    public static void main(String args[])
    {
  
        try {
  
            // Create a Zip File
            ZipFile zip_file
                = new ZipFile("f:\\file.zip");
  
            // Display the comment
            // of the zip file
            // using getComment() function
            System.out.println("comment = "
                               + zip_file.getComment());
        }
        catch (Exception e) {
            System.out.println(e.getMessage());
        }
    }
}

Output:

comment = This is a zip file comment

Example 2: Create a file named zip_file and get the comment using getComment() function. This function throws exception if we close the file and then call the function getComment().




// Java program to demonstrate the
// use of getComment() function
  
import java.util.zip.*;
  
public class solution {
    public static void main(String args[])
    {
  
        try {
  
            // Create a Zip File
            ZipFile zip_file
                = new ZipFile("f:\\file.zip");
  
            // close the file
            zip_file.close();
  
            // Display the comment
            // of the zip file
            // using getComment() function
            System.out.println("comment = "
                               + zip_file.getComment());
        }
        catch (Exception e) {
            System.out.println(e.getMessage());
        }
    }
}

Output:

zip file closed

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

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