Java variable, field, property field – member variable or data member. It is a variable inside a class ( class variable or instance variable ) attribute – in some articles you can find that attribute it is an object representation of class variable . Object operates by attributes which define a set of characteristics.
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10.9 Class diagrams Attributes are an object’s data, and methods are an object’s code . An object’s class defines which attributes and methods it will have.
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A constructor is a special type of member function that is called automatically when an object is created . In C++, a constructor has the same name as that of the class and it does not have a return type. For example, class Wall { public: // create a constructor Wall() { // code } };
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A constructor in Java is a special method that is used to initialize objects . The constructor is called when an object of a class is created.
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