Question

I’m setting a java Pojo instance variable to ‘val’ & changing its state after it’s initialized. Will this cause any issues since its really a ‘var’ ?

val st = new Pojo();
st.setInt(0);

Answer 1

It’s still a val. The reference can’t be changed, but the object referred to can have its internal state mutated.

val means you can’t do this reassignment:

val st = new Pojo()
st = new Pojo()      // invalid!

For this you need a var:

var st = new Pojo()
st = new Pojo()      // ok