Constructors

BankAccount.java

/** * Create a new bank account with a balance of 0 */ public BankAccount() { balance = 0; }

Constructors look like other methods but they are named after the class and have no return type.

Constructors are invoked by the new operator after the storage for the newly created instance has been allocated but before anything else happens with the new object.

While all instance variables are initialized by some default values, constructors allow to chose other initial values, or to make the choice of the default value less accidental.

Constructors that take no parameters are called default constructors. If no constructor at all was specified for a class, an empty default constructor is implicitly defined by the Java programming language.

	Constructors look like other methods but they are named after the class and have no return type.
	Constructors are invoked by the new operator after the storage for the newly created instance has been allocated but before anything else happens with the new object.
	While all instance variables are initialized by some default values, constructors allow to chose other initial values, or to make the choice of the default value less accidental.
	Constructors that take no parameters are called default constructors. If no constructor at all was specified for a class, an empty default constructor is implicitly defined by the Java programming language.