Java Custom Object creation using assignment operator

Question

I want to create my custom object using the assignment operator as the string does.

For example,

If I want to create an Object of employee class in a simple way like -

Class Employee{
   private String name;
   private int age;
   private String country; 
}

Employee employee = "Bagesh,27,India";

So is it possible to create an object the same way String class creates? or anyone can suggest the internal working of string assignment operator object creation.

I have already searched for it on many links but didn't get a complete answer.

Does this answer your question? [Assignment Operator Overloading Java](https://stackoverflow.com/questions/15129284/assignment-operator-overloading-java) — Michael Hancock, Jan 29 '20 at 11:24
Your best bet would be to create a constructor. Employee employee = new Employee("Bagesh",27,"India"); — SpaceCowboy, Jan 29 '20 at 11:27
Only String literals can be created using assignment operator like this. Custom objects needs to be created via Constructors. String message = "Hello World"; — Zain Ul Abideen, Jan 29 '20 at 11:29

score 3 · Answer 1 · answered Jan 29 '20 at 11:28

So is it possible to create an object the same way String class creates? [...] Employee employee = "Bagesh,27,India";

No, you can't do that. You'd need some form of operator overloading (either assignment overloading, or overloading of string quotes), and none of that is possible in Java.

You can do:

Employee employee = new Employee("Bagesh,27,India");

Though that would be odd, you might as well split your string up and do:

Employee employee = new Employee("Bagesh",27,"India");

If you wanted something a bit shorter, you could delegate to a separate method with a short name:

Employee employee = fromStr("Bagesh",27,"India");

...and implement fromStr() to call your constructor, though there's very little point in taking that approach in this example.

Other "flavours" of the above are all possible - factory classes, static factory methods, etc. - but none of them will give you the syntax you've defined in your question.

score 2 · Accepted Answer · answered Jan 29 '20 at 11:28

No, that is not possible.

The String class is special in Java. The compiler has special knowledge about it and knows how to generate byte code for e.g. the = operator (assign reference to a preallocated string in the String pool) and + operator (call .concat()).

Java Custom Object creation using assignment operator

2 Answers2