limits:
  cpu:
    number: 0.005
    format: DECIMAL_SI

package com.example.springdemo.utils;

import java.io.FileReader;

import com.esotericsoftware.yamlbeans.YamlReader;

import io.kubernetes.client.custom.Quantity;
import io.kubernetes.client.models.V1ResourceRequirements;


public class DemoYaml {
    public void transYaml() throws Exception{

        YamlReader reader = new YamlReader(new FileReader("demo.yaml"));
        V1ResourceRequirements demo = reader.read(V1ResourceRequirements.class);
        System.out.println(demo);
    }
    public static void main(String[] args) {

        Quantity x = new Quantity("5m");
        System.out.println(x);
        DemoYaml demoYaml = new DemoYaml();
        try {
            demoYaml.transYaml();
        } catch (Exception e) {
            e.printStackTrace();
        }

    }
}

Caused by: java.lang.reflect.InvocationTargetException: Unable to find a no-arg constructor for class: io.kubernetes.client.custom.Quantity