filter.java

class ByValuePredicate implements Predicate<Object> {
		Object value;
                String fieldName;
		public ByValuePredicate(String fieldName, Object value) {
			this.value=value;
                        this.fieldName=fieldName;
		}
		public boolean apply(Object toTest) {
			return toTest.class.getField(fieldName).get(toTest).equals(value);
		}
}

List<Object> mylist = etc
List<Object> matches = Collections2.filter(mylist, new ByValuePredicate(valuetomatch, "myfield");