How to create a generic constructor for a generic class in java?

How to create a generic constructor for a generic class in java?

In Java, you can create a generic constructor for a generic class by defining a constructor method that takes generic type parameters matching the type parameters of the class itself. Here's how you can do it:

public class MyGenericClass<T> { private T value; // Generic constructor public MyGenericClass(T value) { this.value = value; } // Other methods and members of the class }

In the example above:

  • MyGenericClass is a generic class that has a type parameter T.
  • The constructor MyGenericClass(T value) is a generic constructor that takes an argument of type T and assigns it to the value member variable.

You can create instances of MyGenericClass by specifying the type argument when constructing objects:

MyGenericClass<Integer> intInstance = new MyGenericClass<>(42); MyGenericClass<String> strInstance = new MyGenericClass<>("Hello, World!");

In the example above, intInstance is an instance of MyGenericClass with the type parameter Integer, and strInstance is an instance with the type parameter String.

When you create an instance of a generic class using a constructor like this, Java infers the type parameter from the argument you provide, making it a type-safe way to create objects with different types.

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