How to create 7z archive with no compression using java

Question

now we are using library zip4j to create archive with no compression:

ZipFile zipSoubor = new ZipFile("test.zip");

and when I want to stream I use:

zipSoubor.addStream(bis, getDefaultZipParameters());

and

private ZipParameters getDefaultZipParameters() {
    ZipParameters zipParametre = new ZipParameters();
    zipParametre.setCompressionMethod(Zip4jConstants.COMP_STORE);
    zipParametre.setSourceExternalStream(true);
    zipParametre.setEncryptFiles(true);
    zipParametre.setEncryptionMethod(Zip4jConstants.ENC_METHOD_AES);
    zipParametre.setAesKeyStrength(Zip4jConstants.AES_STRENGTH_256);
    zipParametre.setPassword(heslo);

    return zipParametre;
}

problem is when I open this archive in mc (F3) I see type is zip. I need to create archive with type 7z. Is there some option how to create it in java ?

Answer 1

Apache Commons Compress（ http://commons.apache.org/proper/commons-compress/ ）添加了对编写7z文件的初步支持。