servlets and Java server pages (JSPs)
Introduction to JSP in Java
is used to create java based web applications
Introduction to Servlet in Java
Servlet is the base of web applications in Java. If you want to make a web application, then it is necessary to know about it.
Disadvantages of Servlet
Web page designing is difficult
Recompiled and Redeployed
For every request we have to write seprate service method
Frequently Asked Questions
Q1. What is Java?
Java is a class based high level object oriented programming language.
Q2. Why name JAVA?
In the year 1991, James Gosling and his Team start a project. Their Team name was Green Team and from here Java history began. Inital name of the java is green talk with file .gt extension, further rename to OAK. Because OAK is the national tree of many countries (USA, FRANCE etc.) also there is a company registered with OAK name. So they start searching a unique name which does not exist and one day when they are in Indonesia island they ordered coffee a coffee got an idea to rename OAK to Java So, he discussed with their team member and they also like this name So, later renamed to Java with coffee
Q3. Syntax of java comes from which language?
The syntax is mostly derived from C and C++ .
Q4. Why learn Java language?
- Simple and easy to learn .
- Open source .
- Plateform independent .
- Secure .
- Embeded .
- Compiled and intrepreted .
- Roboust .
- Large library and framworks .
Q5. Is Java compiled or Interpreted?
Java is both compiled and interpreted.
Q6. In which language is a Java compiler written?
The very first Java compiler was written in C by Sun Microsystems with some libraries from C++. But Now a days, The compiler is written in Java and the JVM(runtime) is written in C
Q7. Write once, run anywhere(WORA) means?
Bytecode code can be run in any plateform like windows, linux, mac, mobiles etc.
Q8. What apparoach compiler does follow to execute a program?
Java compiler executes the code from top to bottom.