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How do you return an object from a method?
“In order to return an object from a Java method, you must first declare a variable to hold a reference to the object.” So in this case, Ball is a variable that is a reference to the object.
How do you return a class object from method in Java?
In java, a method can return any type of data, including objects. For example, in the following program, the incrByTen( ) method returns an object in which the value of a (an integer variable) is ten greater than it is in the invoking object.
How do you instantiate an object in a class?
Instantiating a Class The new operator requires a single, postfix argument: a call to a constructor. The name of the constructor provides the name of the class to instantiate. The constructor initializes the new object. The new operator returns a reference to the object it created.
How to return an object from a method?
You return the actual object into a variable of base class type and when you call a method the right code will be runned depeding on the actual object type. If your types are unrelated then it is worth while to see if you can make them share a base class because uing polimorphism is more elgant way to solve the problem than a big switch.
How to create an object from a different class in Java?
If you want to merely have an instance of Chupacabra class inside of the Dog class, then you can declare it as an instance variable, as such: public class Dog extends Animal { Chupacabra myChupacabra = new Chupacabra (); //…
How to construct a different type of object?
Constructing a different type of object based on some input sound like you could use the Factory design pattern. EDIT: If you want callers to not check for the object type then the Factory pattern is becoming a viable option as it leverages polimorphism.
How to pass and return objects in Java?
Passing and Returning Objects in Java. In java, a method can return any type of data, including objects. For example, in the following program, the incrByTen( ) method returns an object in which the value of a (an integer variable) is ten greater than it is in the invoking object.