A JSP becomes a servlet. You don’t directly create servlet, it is generated by Container only. Container takes what you have written in your JSP, translates it into a servlet class source file then compiles that into a java servlet class. And this code would execute in the same as it were written in java file.
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Spring AOP(Aspect Oriented Programming)
Introduction The key unit of modularity in OOP is the class, whereas in AOP the unit of modularity is the aspect. In OOP, classes are organized to perform specific kinds of work. There could be a kind of work that might be done by several classes, in that sense ASPECT will be used.AOP in Spring… Continue reading
Non Access Modifiers in Java
Access modifiers provide a mechanism for Access Control and different access modifiers can be used to achieve different accessibility. But Non Access Modifiers have nothing to do with accessibility. But it is used to determine specific characteristics of class/variable/methods etc. Below are the 7 Non Access Modifiers available in Java.
Access Modifiers in Java
Access modifiers (AM) in java help you set the level of access you want for your class, constructor, variables as well as methods. Access levels (Access Control) can be changed by using different access modifiers. There are three access modifiers but four access control. Default is the access control which will be set when one… Continue reading
String Builder
A String Builder is like a String but can be modified. String has the drawback that once created it can not be modified. To overcome that problem String Buffer and String builder can be used. Difference between String Buffer and String Builder ‘StringBuffer’ is safe for use by multiple threads(Thread Safe). The methods are synchronized…. Continue reading
Serialization in Java
Java object serialization is used to persist Java objects to a file, database, network, process or any other system. Serialization flattens objects into an ordered, or serialized stream of bytes. The ordered stream of bytes can then be read at a later time, or in another environment, to recreate the original objects.
Overloading in java
An Overloaded Method gives you an option to use the same method name in a class but with a different argument.
Constructor in Java
Constructors in Java can be seen as a special method in a class. But there is a big difference between Constructor and Method. These differences can be defined in terms of purpose, syntax, and invocation. A constructor is used in the creation of an object of a class.
Inner Class
Java Inner classes are classes within class. An inner class instance has a special relationship with outer class. This special relationship gives inner class access to a member of the outer class as if they are the part of the outer class. Note: Java Inner class instance has access to all member of the outer… Continue reading
Inheritance
Java Inheritance defines an is-a relationship between a superclass and its subclasses. This means that an Object of a subclass can be used wherever an object of the superclass can be used. Class Inheritance in Java is used to build new Classes from existing Classes. The inheritance relationship is transitive: if Class x extends Class… Continue reading