softwaretrick

double p,t,r si; p=1000; t=5; r=3; si=p×t×r; System.out.println(si);

int a,b,c; a=5; b=6; c=a; a=b; b=c; System.out.println(a+""+b);

int a,b; a=5; b=6; a=a+b; b=a-b; a=a-b; System.out.println(a+""+b);

click the link in order to see the steps  https://youtu.be/m3gd3cj2gFI

First open playstore type "java id" then install the application, then open the application using "continue free" then write any program  https://youtu.be/8ohRxAy_KJU

1.create a video open youtube click the account option on the right side click the channel and create a channel  then click the video option choose the video then give the title  then click upload  when your video completely upload it shows a msg ready to play then your video is ready

ctrl+a  select all ctrl+v  paste ctrl+c   copy ctrl+y   redo ctrl+z   undo ctrl+x   cut alt+f4    close computer or file ctrl+o    open ctrl+n    new

Operator precedence determine which operator will execute first in a expression ex a+b×c  in this expression multiplication will execute first then addition

->Hiding unecessery data and showing necessery data to the user we use data abstraction -> we use private,public,protected excess specifier  for data abstraction ex- class teacher { private int salary; public String name; }

->when a method or variable perform different task it goes under polymerphism -> method overloading is example of polymerphism

->Creating a new classes from the existing class and get all the properties from the existing class and use it in the inherit class . -> we use "extends" keyword for inheritance ex - class student extends teacher

First open note pad and type the command :a md %random% goto a save it any name.bat ex- one.bat then click the batch file now you can see magichttps //youtu.be/vZgo2491dnw

Booting is the process to load the operating system in primary memory. it indicate how data will transfor from secondary memory to primary memory. it is three type 1- cold boot 2- warm boot 3- clean boot cold boot- To on the system by pressing power on button is called cold boot. warm boot- To on the system by pressing restart button is called warm boot. clean boot- To load the essiential features of the operating system is called clean boot

open playstore type ip webcam instal the aap, after installing on your hotspot and connect your phone to any laptop or phone, then open ip webcam click start server now your server will start after this you will found one ip address note that ip address . now open your laptop which alread connected to your hotspot, open crome browser type the ip address in the url click search then one page will open then click browse option, now you will see the picture https://youtu.be/6iK51RPC_74

Simple Mail Transfer  Protocol , a  protocol  for sending e-mail messages between servers.

In computing, the Post Office Protocol is an application-layer Internet standard protocol used by e-mail clients to retrieve e-mail from a mail server. POP version 3 is the version in common use.

HTTP  is a connectionless text based  protocol . Clients (web browsers) send requests to web servers for web elements such as web pages and images

a global computer network providing a variety of information and communication facilities, consisting of interconnected networks using standardized communication protocols.

A  tree topology  is a special type of structure in which many connected elements are arranged like the branches of a  tree . For example,  tree  topologies are frequently used to organize the computers in a corporate network,

In a star network, every host is connected to a central hub. In its simplest form, one central hub acts as a conduit to transmit messages. The star network is one of the most common computer network topologies.