In a computer’s central processing unit (CPU), the accumulator is a Register in which intermediate arithmetic and logic results are stored. Without a Register like an accumulator, it would be necessary to write the result of each calculation (addition, multiplication, Shift, etc.) to main memory, perhaps only to be read right Read More …
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What is Servlet ? Explain Servlet life cycle.
Servlet: A servlet is a Java programming language class that is used to extend the capabilities of servers that host applications accessed by means of a request-response programming model. Servlet life cycle: A servlet life cycle can be defined as the entire Read More …
What is Protocol Layers
The communication between the nodes in a packet data network must be precisely defined to ensure correct interpretation of the packets by the receiving intermediate and the end systems. The packets exchanged between nodes are defined by a protocol – or communications Read More …
What are Microwaves ? Explain their properties.
Microwave: Electromagnetic Spectrum consists of entire range of electromagnetic radiation. Radiation is the energy that travels and spreads out as it propagates. The types of electromagnetic radiation that makes the electromagnetic spectrum is depicted in the following screenshot. Properties of Read More …
What is proxy server? Explain URL class and its methods in java.
String StringBuffer String is slow and consumes more memory when you concat too many strings because every time it creates new instance. StringBuffer is fast and consumes less memory when you concat strings. String class overrides the equals() method of Read More …
What is Servlet? Explain GET and POST methods of Servlet.
Servlet can be described in many ways, depending on the context. Servlet is a technology which is used to create a web application. Servlet is an API that provides many interfaces and classes including documentation. Servlet is an interface that Read More …
Explain TCP/IP Sockets.
A socket programming interface provides the routines required for interprocess communication between applications, either on the local system or spread in a distributed, TCP/IP based network environment. Once a peer-to-peer connection is established, a socket descriptor is used to uniquely Read More …
Explain the need of JDBC? Explain steps involved in connecting a databases using JDBC.
Steps: · Register the driver class The forName() method of Class class is used to register the driver class. This method is used to dynamically load the driver class. Class.forName(“oracle.jdbc.driver.OracleDriver”); · Create the connection object The getConnection() method of Read More …
Explain the need of package in Java. Write a java program to show how package is created
A Java package is a set of classes which are grouped together. This grouping helps to organize Java classes and interfaces classes with the same name. A package provides a unique namespace for the types it contains. Classes in the Read More …
(b) Explain followings in context of java, with the help of examples.
(i) Class and objects (ii) Abstraction and encapsulation (iii) Application program and applet program Class and object A class is a blueprint that describes characteristics and functions of entity.. For example, the class Dog would consist of traits shared by Read More …
