Default constructor (no-arg constructor)įor Lab 1, you should be submitting a Word document AND an excel file, as is stated under the "Lab 1" description found under "Module 1". There are two types of constructors in Java:ġ. We can have private, protected, public or default constructor in Java. Note: We can use access modifiers while declaring a constructor. A Java constructor cannot be abstract, static, final, and synchronized A Constructor must have no explicit return typeģ. Constructor name must be the same as its class nameĢ. There are two rules defined for the constructor.ġ. It is because java compiler creates a default constructor if your class doesn't have any. It is not necessary to write aĬonstructor for a class. Note: It is called constructor because it constructs the values at the time of object creation.
There are two types of constructors in Java: no-arg constructor, and parameterized constructor. It calls a default constructor if there is no constructor available in the class. It is a special type of method which is used to initialize the object.Įvery time an object is created using the new() keyword, at least one constructor is called. The time of calling constructor, memory for the object is allocated in the memory. It is called when an instance of the class is created. In Java, a constructor is a block of codes similar to the method.
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