A Constructor is a special method that is used to initialize a newly created object and is called just after the memory is allocated for the object. It can be used to initialize the objects ,to ...

This implies that constructors can only be overloaded based on method signature. Fortunately, Josh Bloch addressed this in the very first item of both editions of Effective Java.

This approach of having many overloaded versions constructors, each accepting a different number of parameters, is known as telescoping constructors and has been labeled an anti-pattern by some.