import java.lang.reflect.Field;


public class ClassFieldsPrinter {
	public static void main(String[] args) {
		class MyClass {
			public int a;
			public double b;
			public String c;
		}


		MyClass myObj = new MyClass();


		Field[] fields = myObj.getClass().getFields();
		for (Field f : fields) {
			System.out.println(f.getName());
		}
	}
}