Java Web development interview questions 1. Can we use the constructor‚ instead of init()‚ to initialize servlet? - Yes ‚ of course you can use the constructor instead of init(). There’s nothing to stop you. But you shouldn’t. The original reason for init() was that ancient versions of Java couldn’t dynamically invoke constructors with arguments‚ so there was no way to give the constructur a ServletConfig. That no longer applies‚ but servlet containers still will only call your no-arg constructor
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Java Virtual Machine‚ An inside story!! Java Virtual Machine‚ or JVM as its name suggest is a “virtual” computer that resides in the “real” computer as a software process. JVM gives Java the flexibility of platform independence. Let us see first how exactly Java program is created‚ compiled and executed. Java code is written in .java file. This code contains one or more Java language attributes like Classes‚ Methods‚ Variable‚ Objects etc. Javac is used to compile this code and to generate .class
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Java Standard Edition (Java SE)(J2SE): Java Development Kit: Java Runtime Environment: Java SE API Java Virtual Machines (JVM) Deployment Technologies Utilities needed to compile‚ test‚ and debug applications Operating Systems * Java Micro Edition (Java ME)(J2ME): Configurations: Connected Device Configuration (CDC) Standard Java Virtual Machine Used on devices without extreme constraints of resources Connected Limited Device Configuration (CLDC) Small compact Java Virtual Machine
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Table of Contents Core Java Volume II-Advanced Features‚ Eighth Edition - Graphically Rich Book ....................... 1 Table of Contents ................................................................................................................................................................................. 2 Copyright .........................................................................................................................................................................
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JavaScript Objects Everything is an Object • In JavaScript almost everything is an object. Even primitype datatypes (exept null and undefined) can be treated as objects. • Booleans can be objects or primitive data treated as objects • Numbers can be objects or primitive data treated as objects • Strings are also objects or primitive data treated as objects • Dates are always objects • Maths and Regular Expressions are always objects • Arrays are always objects • Even functions are always
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Gaddis – Starting Out With Java 5 – From Control Structures to Objects Chapter 06 – A First Look At Classes Multiple Choice 1. One or more objects may be created from a(n)_____. a. field b. class c. method d. instance ANS: B 2. Class objects normally have _____ that perform useful operations on their data‚ but primitive variables do not. a. fields b. instances c. methods d. relationships ANS: C 3. In the cookie cutter method: Think of the _____ as a cookie cutter and _____
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Architectural Strategies Java VS .Net Technology University of Phoenix Online Software Architecture July 16‚ 2012 CDCo needs to improve its architecture strategy in order to make the current application architecture more efficient and productive. Looking at the level 0 target state architecture of CDCo‚ improvement is necessary and choosing which types of technology to use needs to be thoroughly examine to see which is more beneficial to use or adapt
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ACTUAL PARAMETER | FORMAL PARAMETER | A) | PARAMETER THAT APPEARS IN FUNCTION CALL STATEMENT IS KNOWN AS ACTUAL PARAMETERExp. int y = ob.sum (m‚ n); | A) | PARAMETER THAT APPEAR IN FUNCTION DEFINATION IS KNOWN AS FORMAL PARAMETERSExp. void sum(int a‚ int b) | B) | THIS IS USED TO PASS VALUE | B) | THIS IS USED TO RECEIVE VALUE | | | | | WHILE | DO WHILE | A) | WHILE LOOP WILL NOT EXECUTE AT ALL IF THE CONDITION IS NOT SATISFIED | A) | BUT DO WHILE CONTINUE ATLEAST ONCE | B) |
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Lab Exercises Object Oriented Programming with Java Lab Exercise Lab Unit – 1 (2 Hrs Real Time) 1.1 Write a program to display any message: 1.2 Write a Java program to display default value of all primitive data types of Java. 1.3 Write a program check two strings are equal or not. Lab Unit – 2 (2 Hrs Real Time) 2.1 Write a program to give the examples of operators. 2.1.1 Increment and decrement operators. 2.1.2 Bitwise Complement Operator. 2.1.3 Arithmetic operator. 2.1.4 Relational
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Title: Android App Development with Java Essential Training Training Hours: 15h Overview: Android App Development with Java Essential Training is a comprehensive look at the Android architecture that teaches how to build and deploy applications for Android phones and tablets using the Java programming language. Starting with the installation of the required developer tools‚ including Eclipse and the Android SDK‚ the course covers how to build the user interface‚ work with
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