How to get one attribute from list of custom objects

Question

Java - JxPath - Spring

I have List<MyClass> myClassList filled with MyClass objects. I am trying to find a cleanest and fastest way to get Set<String> a property out of myClassList.

class MyClass{

  private String a;
  private String b;


  // setters getters

}

I am using jxpath for searching but I am not sure it can also do what I mentioned above.

JXPathContext ctx = JXPathContext.newContext(myClassList);
Iterate<String> aProps = ctx.iterate("? what to write");

Can you help?

Answer 1

instead of Jxpath there is way doing it in Guava library.

here is the implementation

    public static final Function<Obj, String> FOO = new Function<Obj, String>() {
            public String apply(Obj input) {
                return input.foo;
            }
        };

List<String> fooList = Lists.transoform(targetList, Object.FOO)
or 
List<String> fooList = Collections2.transoform(targetList, Object.FOO)