Java superclass constructor

To explicitly call the superclass constructor from the subclass constructor, we use super() . It’s a special form of the super keyword.

To explicitly call the superclass constructor from the subclass constructor, we use super() . It’s a special form of the super keyword.

Call Superclass Constructor from Subclass To call the constructor for each superclass within the subclass constructor, use the following syntax: obj@SuperClass1(args,…); … obj@SuperclassN(args,…);

Call Superclass Constructor from Subclass To call the constructor for each superclass within the subclass constructor, use the following syntax: obj@SuperClass1(args,…); … obj@SuperclassN(args,…);

A subclass needs a constructor if the superclass does not have a default constructor (or has one that is not accessible to the subclass). If the subclass has no constructor at all, the compiler will automatically create a public constructor that simply calls through to the default constructor of the superclass.

A subclass needs a constructor if the superclass does not have a default constructor (or has one that is not accessible to the subclass). If the subclass has no constructor at all, the compiler will automatically create a public constructor that simply calls through to the default constructor of the superclass.

A subclass needs a constructor if the superclass does not have a default constructor (or has one that is not accessible to the subclass). If the subclass has no constructor at all, the compiler will automatically create a public constructor that simply calls through to the default constructor of the superclass.