I have a class for example GooglePlayConnection. When I create object of this class without variable initialization (just to invoke method) new GooglePlayConnection() IDEA suggest to me 2 options: like default empty constructor () and .. array []? What does it mean?
I don't have any constructors in these classes.
You don't have to provide any constructors for your class, but you must be careful when doing this. The compiler automatically provides a no-argument, default constructor for any class without constructors.
https://docs.oracle.com/javase/tutorial/java/javaOO/constructors.html
...and .. array []? What does it mean?
It's to create a GooglePlayConnection
array :
GooglePlayConnection[] connections = new GooglePlayConnection[10];
connections[0] = new GooglePlayConnection(/*...*/);
// ...
or
GooglePlayConnection[] connections = new GooglePlayConnection[] {
new GooglePlayConnection(/*...*/),
// ...
};
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