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10. How to use YAML files in high programming languages such as JAVA, Python, etc?

Glorious Goldfinch answered on December 20, 2022 Popularity 1/10 Helpfulness 1/10

answer 10. How to use YAML files in high programming languages such as JAVA, Python, etc?

10. How to use YAML files in high programming languages such as JAVA, Python, etc?

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YAML is supported in most programming languages and can be easily integrated 
with user programs.
In JAVA we can use the Jackson module which also parses XML and JSON. For e.g


1// We need to declare Topic class with necessary attributes 
such as name, total_score, user_score, sub_topics
2List<Topic> topics = new ArrayList<Topic>();
3topics.add(new Topic("String Manipulation", 10, 6));
4topics.add(new Topic("Knapsack", 5, 5));
5topics.add(new Topic("Sorting", 20, 13));
6// We want to save this Topic in a YAML file
7Topic topic = new Topic("DS & Algo", 35, 24, topics);
8// ObjectMapper is instantiated just like before
9ObjectMapper om = new ObjectMapper(new YAMLFactory());
10// We write the `topic` into `topic.yaml`
11om.writeValue(new File("/src/main/resources/topics.yaml"), topic);
1---
2name: "DS & Algo"
3total_score: 35
4user_score: 24
5sub_topics:
6- name: "String Manipulation"
7 total_score: 10
8 user_score: 6
9- name: "Knapsack"
10 total_score: 5
11 user_score: 5
12- name: "Sorting"
13 total_score: 20
14 user_score: 13
Similarly, we can read from YAML also:
1// Loading the YAML file from the /resources folder
2ClassLoader classLoader = Thread.currentThread().getContextClassLoader();
3File file = new File(classLoader.getResource("topic.yaml").getFile());
4// Instantiating a new ObjectMapper as a YAMLFactory
5ObjectMapper om = new ObjectMapper(new YAMLFactory());
6// Mapping the employee from the YAML file to the Employee class
7Topic topic = om.readValue(file, Topic.class);


In python similarly, we can use the pyyaml library 
and read and write easily in YAML format.

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Contributed on Dec 20 2022

Glorious Goldfinch

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10. How to use YAML files in high programming languages such as JAVA, Python, etc?

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