Invoking setter method using java reflection

If you happen to use spring framework, you could use the PropertyAccessorFactory for retrieving an implementation of the PropertyAccessor interface:

Accessing properties directly

PropertyAccessor myAccessor = PropertyAccessorFactory.forDirectFieldAccess(object);
// set the property directly, bypassing the mutator (if any)
myAccessor.setPropertyValue("someProperty", "some value");

Accessing properties through accessors/mutators

If you need to access your properties using their getters and setters, you could use instead the forBeanPropertyAccess method:

PropertyAccessor myAccessor = PropertyAccessorFactory.forBeanPropertyAccess(object);
// a `setSomeProperty()` method will be used
myAccessor.setPropertyValue("someProperty", "some value");