Yes, we can have multiple classes in same java file. But, there is one restriction over here, which is that you can have as many classes in one file but only one public class is allowed. If we try to declare 2 classes as public in the same file, the code will not compile. The …
JVM or Java Virtual Machine is a program that takes the Java byte code that is with a file.Class and converts the byte code into machine understandable language. Here byte codes indicate, a highly optimized set of instructions designed to be executed by the Java runtime system. JVM is also a significant part of JRE that …
How Many Types of Memory Areas are Allocated by JVM? Read More »
Thread: A sub-process or a smallest unit of processing, called thread. Generally a single thread work only on a single sub-process which may or may not be the part of whole processing to achieve any task. A thread is also a lightweight process. Multithreading: To complete any single process or to complete any task, if …
Unlike C++, Java does not support operator overloading. To overload the standard arithmetic operators e.g. +, -, * and / etc, Java doesn’t provide freedom to programmers. Java does not support operator overloading because by choice of its developers where they wanted to make it a simple language. Overloading of operator allows you to do …
In this article, we’ll talk about what is FizzBuzz and how to implement FizzBuzz in Java. What is FizzBuzz? FizzBuzz is a group game for children to understand the concept of division and multiplication. In which, each child counts the numbers (starting from 1) following these rules: if that number is divisible by ‘3’ then …
Here you will learn the difference between abstract class and concrete class in Java. Abstract classes are partially implemented classes. This means that they have some methods which need to be implemented in the derived class. As the object of abstract classes can’t me instantiated, so they just serve the purpose of inheritance. These classes …
Difference between Abstract Class and Concrete Class in Java Read More »
Here you will learn about difference between odbc and jdbc in detail. ODBC and JDBC might look similar but they actually hold a good measurable field of differences among them. Although, both are used for database connectivity, their usage and features are quite apart from each other. Here is a brief introduction of the two. …
In this article we will learn about java is pass by value or pass by reference. It is very hard to say that unless we have deep understanding about pass by value and pass by reference. Pass by value: In pass by value when we are passing parameters to method they will be copied to …
