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Is C++ string.append (or +) faster than Java's StringBuilder .append method?

Asked by Ravi Shankar 11/07/2017 Last Modified 15/07/2017

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What exactly the work of constructor( default, parameterized) especially about instance variables initialization. Suppose user initialize the instance variables explicitly. Then what is the use of parameterized constructor over here.. Please reply me

Construct as the name suggest are used to construct the object. So, they are invoked only once and that too at the time of object creation. Default Constructor : Initialize all the instance variables...

Surekha

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Who can provide good Java training with real-time but not institute?

I provide industry specific training to students. If interested check my profile. I used to provide training in Big Data, Java, Scala and Spark too.

Sridevi

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1.What is Model Driven Interceptors is used for? 2.what is the purpose of using Action support??

Using ActionSupport class, we can implement Custom validation which validates at the server-side. We can write server side validation logic in validate() method.

Monisha

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Base obj=new Child(); What are the advantage and real life application of above code?

Have you ever observed while communicating with databases? You can find such type of example while writing code from communicating with DB. Connection connectionObject = DriverManager.getConnection(); or Statement...

Vijay

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What are the different types of Exceptions in Java?

Null pointer exception ArrayOutOfIndex exception DivideByZero exception

Aakanksha

1 0

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ClassNotFoundException NoClassDefFoundError It is an exception and happens due to programmer’s mistake and can be recovered by updating the code. Thrown when an application tries...

Vivek R.

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Java Collection

Collection: The collection provides an architecture like a list where we can store and manipulate the group of items. Through Collections, we can achieve operations such as searching, sorting, insertion,...

Vinaykumar Devarkond

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Demand of java in industry

Java is one of the widest use language in the industry all around the world As in software market more than 80% software, platform developed using java. Java comes in three flavours:- j2se for window based...

Prashant Tomer

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Java Training Syllabus

Learn JAVA-J2EE Syllabus Core Java - Syllabus aligned to OCA Exam - JDK 8 Object-Oriented Programming (OOPS) concepts: Programming Languages Object Oriented Programming Classes & Objects Pillars...

MindScripts Technologies

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Puzzle Game coding

import java.awt.BorderLayout;import java.awt.Color;import java.awt.Dimension;import java.awt.Font;import java.awt.FontMetrics;import java.awt.Graphics;import java.awt.Graphics2D;import java.awt.RenderingHints;import...

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