CODEWITHSUNDEEP
javacompressionzip4j
Tushar Khanna
Tushar Khanna

Reputation: 448

Any way to get Compression method in java using zip4j library?

I want to return boolean to check if my zip file is compressed . Will be an advantage if i can also get what Compression method has been used. For now I am just checking is it is Encrypted and is valid zip. Please help if it is possible using zip4j library.

public static boolean isPackageCompressed(String path) throws ZipException{
    boolean isPackageCompressed = false;

    ZipFile zipFile = new ZipFile(path);

    System.out.println(zipFile.isEncrypted());       
    System.out.println(zipFile.isValidZipFile());        

    // TODO. There is no method like zipFile.getCompressionMethod() . 

    return isPackageCompressed; 
}

public static void main(String[] args) {
    try {
        isPackageCompressed("D:\\some.ZIP");
    } catch (ZipException e) {
        e.printStackTrace();
    }
}

Upvotes: 1

Views: 1450

Answers (1)

kpearlkmanic
kpearlkmanic

Reputation: 84

Check this out may be helpful (Not the complete answer )

ZipParameters zp = new ZipParameters();
zp.setFileNameInZip("sample.zip");
System.out.println(zp.getCompressionMethod());
System.out.println(Zip4jConstants.COMP_DEFLATE);

OutPut:
8
8

Upvotes: 1

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