Review of existing Java JDK examples

[lisaTeis]

1. All class names have the ending "...InOneMethod", may this could be deleted, because only the scenario itself is necessary (Defined example code method like: demonstrate$SCENARIO)

2)Missing in all Java examples (except Symmetric String Encryption (password based)):
Defined example code method like: demonstrate$SCENARIO
Example code method accepts appropriate parameter (usually String).
The example only contains one defined method for the example demonstration AND a main method
Main method calls the demonstrator method with parameter
Return a result depending on the application output

-> At the moment there is no method. Functionality is in the main method.

3. In all other Java examples it is: plainText.getBytes(StandardCharsets.UTF_8)

In the "Asymmetric String Encryption" it is only:
byte[] cipherTextBytes = cipher.doFinal(plainText.getBytes());
-> Guideline point: "Regarded the encoding of the string" in "Asymmetric encryption" is missing

In the same example the comment (and in "String Signing "):
/* @see https://www.keylength.com/ */
may could be deleted (because of minimality) and because
there is already a reference to this website in the guideline section: "Choosing secure algorithms and concepts"

4. In example "Asymmetric String Encryption"
   the use-case is missing (Listed use cases for this code example/scenario)

5. Heading formatted like: $PROGRAMMING_LANGUAGE_NAME $SCENARIO using $LIBRARY_NAME is not correct in: "Password based symmetric file encryption in Java using JDK",
   "Asymmetric String Encryption using Java JDK"

6. In all examples:
   Heading above code formatted like: Example Code for $HEADING_WITHOUT_USING_LIBRARY using $IMPORTANT_ALGORITHMS_AND_CONCEPTS
   is not in right format at the moment (at least the $HEADING_WITHOUT_USING_LIBRARY part is not similar to the actual heading)

7. Stated used language versions
   is missing

8. In example "Symmetric File Encryption"
   The imports may could be minimized:
   import javax.crypto.*;
   import javax.crypto.spec.GCMParameterSpec;
   ...

e.g. javax.crypto.* also contains javax.crypto.spec.GCMParameterSpec, I think

[kmindi]

Thank you @lisaTeis

fixed in 0.4.1

But imports shall always be explicit (not hidden via .*) (regarding 8. of your comment)