virtual methods are used to use the polymorhism feature in C++. Say class A is inherited from class B. If we declare say fuction f() as virtual in class B and override the same function in class A then 

Given two tables Student(SID, Name, Course) and Level(SID, level) write the SQL statement to get the name and SID of the student who are taking course = 3 and at freshman level?

SELECT Student.name, Student.SIDFROM Student, LevelWHERE Student.SID = Level.SIDAND Level.Level = "freshman"AND Student.Course = 3; 

Class ABC{static final float GRAVITATIONAL_CONSTANT = 9.8;public void getConstant(){system.out.println("Gravitational_Constant: " + GRAVITATIONAL_CONSTANT);}} 

Latest Answer : class abc{ final const float PI=3.14f;} ...

Class C extends A implements B{} 

Tags : Inheritance

The Object class is the highest-level class in the Java class hierarchy. The Class class is used to represent the classes and interfaces that are loaded by a Java program. 

By implementing either the java.io.Serializable interface, or the java.io.Externalizable interface. As long as one class in a class's inheritance hierarchy implements Serializable or Externalizable,