// comparisonUsingExpressions end
SimpleFeature city = DataExamples.getInstanceOfCity();
Utility.prittyPrintFilter(filter);
PropertyIsLessThan lessThan =(PropertyIsLessThan) filter;
Expression leftExpr = lessThan.getExpression1();
Expression rightExpr = lessThan.getExpression2();
System.out.println("left expression value: " + leftExpr.evaluate(city));
System.out.println("right expression value: " + rightExpr.evaluate(city));
Boolean result = lessThan.evaluate(city);
System.out.println("Result of filter evaluation: " + result);
}