Constructors...

Difference between default constructor & empty constructor in java...

When we don't create a constructor Java creates a default constructor. But when we create one or more constructors Java doesn't create any default constructors... If we create one or more constructors and we want to create a object without any constructor We have to declare a empty constructor... an example is shown below....  class Constructor{       String name; //declaring attributes     int age;     String address;     String school; /////////////////////////////////// /*default constructor is something like this     public Constructor()     {    }             */ ////////////////////////////////// public Constructor(String name1,int age1){     name = name1;     age = age1;     System.out.println("My name is: "+name);     System.out.println("I am "+age+" years old.");      } public Constructor(String address1){     address = address1;     System.out.println("My address is: "+address); } //////////////////////////////////// //When we creates constructors & if we want to make a object without constructor //we have to declare a empty constructor... public Constructor()      {    } /////////////////////////////////// public void school(String school1){          school = school1;     System.out.println("I studied at "+school+" ."); } public static void main(String [] args){     Constructor student = new Constructor("Manathunga",19);          Constructor place = new Constructor("Colombo,Srilanka");               Constructor empty = new Constructor();   //from empty constructor...     empty.school("Sivali central college");      } } Hint : We put ( ) brackets after a object is created           ex :  Constructor empty = new Constructor();           We can put these brackets without any hesitation because            java makes a default constructor.But we can't see it...           ex:   public Constructor()                 {             }