Constructor in Java
Constructor in Java
Constructor in java
In Java, a constructor is a special method used to initialize objects. It is called when an object of a class is created. Constructors have the same name as the class and do not have a return type (not even void).
Types of Constructors in Java
Default Constructor (No-Argument Constructor)
Parameterized Constructor
Default Constructor
A default constructor is a constructor that does not take any arguments. If no constructor is explicitly defined in a class, Java automatically provides a default constructor.
Parameterized Constructor
A parameterized constructor is used to initialize an object with specific values.
Key Points About Constructors
• A constructor must have the same name as the class.
• A constructor does not have a return type.
• If no constructor is defined, Java provides a default constructor automatically.
• Constructors can be overloaded (having multiple constructors with different parameters).
• Constructors cannot be static, final, or abstract.
• The this keyword can be used inside a constructor to refer to the current object's instance variables.
• The super keyword can be used inside a constructor to call the parent class constructor.
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