what is the difference between constructor and method core java interview questions and answers

Core Java Interview Questions and Answers :

What is the difference between 'constructor' and 'method ' ?
Constructor will be automatically invoked when an object is created whereas method has to be called explicitly.

Public class ClassDemo {
ClassDemo(){
}
Display(){

}
Public static void main(String[] args){
ClassDemo demo = new ClassDemo();
demo.Display()
}

}