JAXBValidator

gistfile1.java

import classes.Products;

import javax.xml.XMLConstants;
import javax.xml.bind.JAXBContext;
import javax.xml.bind.util.JAXBSource;
import javax.xml.transform.Source;
import javax.xml.validation.Schema;
import javax.xml.validation.SchemaFactory;
import javax.xml.validation.Validator;
import java.io.File;

public class JAXBValidator {
    public static void main(String[] args) throws Exception{
        SchemaFactory sf = SchemaFactory.newInstance(XMLConstants.W3C_XML_SCHEMA_NS_URI);
        Schema schema = sf.newSchema(new File("products.xsd"));

        JAXBContext context = JAXBContext.newInstance(Products.class);
        JAXBSource source = new JAXBSource(context, null);

        Validator validator = schema.newValidator();
        validator.validate(new Source() {
            @Override
            public void setSystemId(String systemId) {

            }

            @Override
            public String getSystemId() {
                return null;
            }
        });
    }
}