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In Java Virtual machine it is necessary to have a class loader subsystem. .class files are read and loaded with this class loader subsystem and it saves the bytecode in the JVM method area

  1. Loading
Class Loader Subsystem


As the Class loader subsystem reads class files which are stored in the hard disk, it performs the loading functionality.

  • Fully qualified name of class

Storing these corresponding information in the method area can be defined…

01. Collections

An array is an indexed Collection of a fixed number of homogeneous data elements. The Main advantage of Arrays is we can represent multiple values with a single variable. So that reusability of the code will be improved.

Arrays are fixed in size i.e. once create an array with some size there is no chance of increasing or decreasing its size based on our requirement. Hence to use arrays compulsory we should know the size in advance which may not always be possible always.

Arrays can hold only homogeneous data elements.

Student [] s = new Student [10000];

s[0] =…


If we can execute several tasks simultaneously we call that concept multitasking. There are two types of multitasking.

  1. Process Based Multitasking

2. Thread Based Multitasking

Process Based Multitasking

Process based multitasking is the execution of multiple tasks at the same time, each of which is a separate independent program (process).

Example : We can listen to audio music from the same system while typing a java application in the editor. We can also download a file from the internet at the same time. All of these duties will be completed at the same time and in a separate order. …


Highways play an important and major role in making travelling easier and convenient. It enhances the transport system by reducing transport cost, travelling time by making transportation schedules and deliveries more timely and reliably. When it comes to the economy, highway transportation is really special and important. People who work in offices can report to their offices on time without any delay if they use a highway. Also huge numbers of companies are traveling goods; provide services in efficient and productive manner due to these highways. Other than economy highways families can also travel frequently there houses, go on trips…


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