Question

I was wondering if i have an abstract super class with x different constructors, and i want to be able to use all those constructors in a subclass, do i have to write all x constructors in the subclass and just let them all call super(…) ? Seems like redundant code..

An example for the clarity:

public class SuperClass {
public SuperClass() {
...
}
public SuperClass(double d) {
...
}
public SuperClass(BigDecimal b) {
...
}
public SuperClass(BigDecimal b, String s) {
...
}
[...]
}

Do i than need:

public class SuperClass {
public SubClass() {
super();
}
public SubClass(double d) {
super(d);
}
public SubClass(BigDecimal b) {
super(b);
}
public SuperClass(BigDecimal b, String s) {
super(b, s);
}
[...]
}

Answer 1

But you have to do it this way. As this way you are deciding what you want to expose in the subclass. Also some constructors might be not appropriate for a sub class thus this is not working by default without you coding it explicitly.