Constructors

  class Info
  {
    public Info()
    {
        System.out.println("Object Created");
    }
  }
  class demo
  {
    public static void main(String args[])
    {
        Info a = new Info();
        Info b = new Info();
    }
  }

  class Worker
  {
    private String name;
    private int wages,wdays;
    public void showData()
    {
        System.out.println("Name is"+name);
        System.out.println("Wages is"+wages);
        System.out.println("Wdays are"+wdays);
    }
    public void payment()
    {
        int p =wages*wdays;
        System.out.println("Payment is "+p);
    }
    public Worker(String n,int w,int d)
    {
        name = n;
        wages = w;
        wdays = d;
    }
  }
  class demo
  {
    public static void main(String args[])
    {
        Worker a;
        a = new Worker("Gopal",500,5);
        a.showData();
        a.payment();
    }
  }

  class Set
  {
    private int n1,n2,n3;
    public int sum()
    {
        int s =n1+n2+n3;
        return s;
    }
    public double mean()
    {
        double m =(n1+n2+n3)/3.0;
        return m;
    }
    public Set(int x,int y, int z)
    {
        n1 = x;
        n2 = y;
        n3 = z;
    }
  }
  class demo
  {
    public static void main(String args[])
    {
        Set a,b;
        a = new Set(4,5,7);
        b = new Set(10,20,25);
        int z = a.sum()+b.sum();
        System.out.println("Total sum is "+z);
        System.out.println("Mean of b is "+b.mean());
    }
  }

  class Account 
  {
    private int accno,balance;
    public void interest(double r,int n)
    {
        double si = balance*r*n/100;
        System.out.println("Interest is"+si);
    }
    public Account(int an,int bl)
    {
        accno = an;
        balance = bl;
    }
  }
  class demo
  {
    public static void main(String args[])
    {
        Account a;
        a = new Account(4117,25000);
        a.interest(10.25,5);
        a.interest(9.75,2);
    }
  }