TolMol Group and Community Posts

How is Java different than C++

Well, both Java and C++ are object oriented programmings and support very similar syntax but there are many differences between these two languages:

C++ involves pointers, Java

OOPS Interview Questions

Below are the very basic object oriented programming questions that you can expect in an interview. A good understanding of these fundamentals is also must for any aspiring OOPS

What is Java IDE

IDE stands for Integrated Development Environment. There are many IDEs that support Java software development. The most popular IDEs include NetBeans, Eclipse, IntelliJ, and SlickEdit.

What's the worst thing that can happen to a Java program

That's a tough one to answer -

Many things can go wrong with a Java program. Some of the commonly encountered problems include:

Infinite loop
Out-of-Memory

What's the difference between append and concat

Concat is used to add a String at the end of another String. Append adds a String or character sequence to StringBufffer.

What is JDBC and how is it used

JDBC API is a Java API that is used for accessing and manipulating data stored in relational databases like MySQL and Oracle. It allows programmers to perform following operations in a Java

Why is it mandatory to override hascode() method on overriding equals() method?

Will you get compile/run time error on not overriding hasCode() method?

How will you make a thread sleep?

A thread can put in sleep mode by using Thread.sleep(SLEEP-TIME) statement. SLEEP-TIME is the time period in milliseconds for which the thread will pause. Once

Does garbage collector use multithreading

Yes, it has to. While a program is running, garbage collector thread can concurrently claim the free memory.

Factory Method Design Pattern - Explained with an example

Factory Method Introduction

The Factory Method design pattern is used to defer the instantiation to the

cyclic inheritance error

What is rule for extending class, so that we will no get "cyclic inheritance" error?
It may use inner class & nested class for extending class.

strictfp utility?

What is strictfp utility & use of it?

strictfp utility?

What is strictfp utility?
How can it be used?

ArrayStroeException?

When will application throw 'ArrayStroeException' ?

Deep cloning v/s shallow cloning

What is differences b/w deep cloning and shallow cloning?
Can you support deep cloning on Array?