What for do we need constructor?

Question

Hi I just wonder, if I can have construction like this:
public class MyClass
private int a = 5;
private AnotherClass another = new AnotherClass();
public MyClass()
//absolutely nothing to do in here
}which lets me initialize variables directly in class definition what for do we need constructor? I always thought that we should initialize object via constructor but as java lets us do it without constructor what is the point of having one? Except of course to provide a way to tell compiler that we want another object of this class by saying:
MyClass myClass = new MyClass();Thanks for any answers.

Answer 1

atch7 wrote:
Hi I just wonder, if I can have construction like this:
public class MyClass
private int a = 5;
private AnotherClass another = new AnotherClass();
public MyClass()
//absolutely nothing to do in here
}which lets me initialize variables directly in class definition what for do we need constructor? I always thought that we should initialize object via constructor but as java lets us do it without constructor what is the point of having one? Except of course to provide a way to tell compiler that we want another object of this class by saying:
MyClass myClass = new MyClass();Thanks for any answers.But you do have a constructor. Take your example and do it this way
public class MyClass {
  private int a = 5;
  private AnotherClass another = new AnotherClass();
}As you wanted. Okay, you can do this. No problem. The compiler will add a default constructor for you, so, even though you didn't write one, you still have one.