How could I validate a YAML structure in java programming

Question

I have a YAML file in my directory and I want to validate the YAML file was in correct structure using java programming. In online it having lot of YAML checker but I want to validate that on java programming.

Clive

Answer 1

Just try to load it with your YAML parser/library. If that throws an error catch it and the structure is invalid. That is the way the online parsers work as well.

Effieeffigy

While this is correct, this approach doesn't cover all use cases that e.g. are covered by XSD for XML files. E.g. when a YAML file lacks a mandatory property, it is set to null in the created POJO/bean (without creating an error). What I said at least applies to snakeyaml. There might be more feature-rich parsers. – Assonance

Answer 2

You can use YAML parser/librairies like Jackson or SnakeYAML:

https://www.baeldung.com/jackson-yaml

https://www.baeldung.com/java-snake-yaml

Palestrina

Answer 3

There's also https://github.com/EsotericSoftware/yamlbeans

One issue I've found is that JSON objects are acceptable YAML 1.2 and, arguably, 1.1 formats.

What valid JSON files are not valid YAML 1.1 files?

Matlick