Question

In our application I have a routine that manually iterates over the properties of an POJO loaded by Hibernate and assigns those properties to a new instance of that object and then saves it.

e.g

Class TestClass{
    Integer a;
    String b;

    public void setA(Integer a){
        this.a = a;
    }
    public Integer getA(){
        return a;
    }
    ...
}

in the action it does

TestClass objectOne = testDao.get(id);
TestClass objectTwo = new TestClass();

and then the iteration is like

objectOne.setA(objectTwo.getA());
objectOne.setB(objectTwo.getB());

I’m wondering if there is a more efficient way to iterate through each propertie of objectOne and set it to ObjectTwo, because in our real application those objects have around 20 properties or so.

Thanks a lot for your help.

Answer 1

Sure. Check out the Apache Commons BeanUtils lib. There you can use copyProperties(Object dest, Object orig)