Skip to main content

Q) What is the output of the fallowing program?




class employees
{
       int empno;
       String name;
       int emp_count;
       employees(int empno)
       {
              this.empno=empno;
              emp_count++;
       }
       void display()
       {
              System.out.println("total no.of employees attended"+emp_count);
       }
}

classexecuteemployee {

       public static void main(String[] args) {
              employees e1=new employees(1001);
              e1.display();
              employees e2=new employees(1002);
              e2.display();

       }

}

A)
Output:
one employee appointed
epno :1001
one employee appointed
epno :1002

->static variables are shared but not owned by objects (they can’t own it)
->objects can manipulate these stack variables
->to get the expected o/p make emp_count as static variable.
Static int emp_count;

Comments

Post a Comment

Popular posts from this blog

Q) Explain repeated deletion of records.

A) //RepeatedDeletion.java import java.util.Scanner; import java.sql.*; class RepeatedDeletion {        public static void main(String[] args) {               Connection con= DriverManager. getConnection ( "jdbc:odbc:prince" , "scott" , "tiger" );               PreparedStatement ps=con.PreparedStatement( "DELETE FROM ACCOUNT WHERE ACCNO=?" );               Scanner s= new Scanner(System. in );               while ( true )               {                      System. out .println( "Enter accno : " );      ...
Post a Comment
Read more

Introduction

1) What is not JDBC? 2) What is the purpose of JDBC? 3) What is ODBC? 4) What is JDBC? 5) What is JDBC architecture? 6) What is JDBC client? What are its responsibilities? 7) What is JDBC API?  8) What is driver manager? 9) What is JDBC driver? What is its role in java database connection? 10) What is database server?
Post a Comment
Read more

Q) Explain about nested classes?

A) ->defining a class with in another class is known as nesting of the class. Ex: class A {        class B        {                      } //nested class, and inner class.because it is not static class. } //enclosing class or outer class. ->static class is declared in inside an another class then it does not become an inner class. Note: non-static nested class is known as “inner class”. In the above example class B is nested but not an inner class. Ex: class D {        static c        {                      } //nested class, but not an inner class , because of static class. } //outer class. ->we have three different kinds of inner classes. 1) Member inner class 2) Meth...
Post a Comment
Read more