constructor

Question

classDemo2
{
inta,b;
Demo2(){
System.out.println("default constructor");
a=5;b=10;
System.out.println("value of a = "+a);
System.out.println("value of b = "+b);
}
classDemo1{
public static void main(String args[])
{Demo2 d2=newDemo2();
}
}

Answer 1

the Constructor has to be the same name as the class. So class Demo2 constructor has to be called Demo2()

Answer 2

a constructor is called at the instance when an object is created.
there is semantic error in your program.
that is class and Demo2 should have space (class_class name).
And the closing parentheses of class Demo2..