Running groovy script in java

Test.java

import groovy.lang.GroovyRuntimeException;
import groovy.util.Eval;

import java.util.function.Predicate;

public class Test
{
	public static void main(String[] args)
	{
		final Predicate<Facts> predicate = getPredicate("facts.name == 'Ale' && facts.subFacts.balance < 100");

		System.out.println(predicate.test(getFacts("Ale", 50))); // true
		System.out.println(predicate.test(getFacts("Cicci", 50))); // false
	}

	private static Facts getFacts(final String name, final Integer balance)
	{
		final Facts facts = new Facts();
		facts.setName(name);
		final SubFacts subFacts = new SubFacts();
		subFacts.setBalance(balance);
		facts.setSubFacts(subFacts);
		return facts;
	}

	private static Predicate<Facts> getPredicate(final String expr)
	{
		return facts ->
		{
			try
			{
				final Object result = Eval.me("facts", facts, expr);

				if (result instanceof Boolean)
				{
					return (Boolean) result;
				}

				throw new IllegalStateException("Invalid return type");
			}
			catch (final GroovyRuntimeException exception)
			{
				throw new IllegalStateException("Error compiling expression", exception);
			}

		};
	}

	private static class Facts
	{
		private String name;
		private Integer number;
		private SubFacts subFacts;

		public String getName()
		{
			return name;
		}

		public void setName(final String name)
		{
			this.name = name;
		}

		public Integer getNumber()
		{
			return number;
		}

		public void setNumber(final Integer number)
		{
			this.number = number;
		}

		public SubFacts getSubFacts()
		{
			return subFacts;
		}

		public void setSubFacts(final SubFacts subFacts)
		{
			this.subFacts = subFacts;
		}
	}

	private static class SubFacts
	{
		private Integer balance;

		public Integer getBalance()
		{
			return balance;
		}

		public void setBalance(final Integer balance)
		{
			this.balance = balance;
		}
	}
}