Explain operator precedence in java, JAVA Programming

Assignment Help:

Explain operator precedence in java ?

It's probable to combine multiple arithmetic expressions in one statement. For example the subsequent line adds the numbers one by five:

int m = 1 + 2 + 3 + 4 + 5;

A slightly more interesting instance: the subsequent program calculates the energy equivalent of an electron by using Einstein's famous formula E = mc2.

class mc2 {
  public static void main (String args[]) {
     double mass = 9.1096E-25;
    double c = 2.998E8;
    double E = mass * c * c;
    System.out.println(E);
  }
}

Here's the output:

$ javac mc2.java
$ java mc2
8.18771e-08

This is all very obvious. Therefore if you use various operators on the similar line it's not always clear what the result will be. For example consider the subsequent code fragment:

int n = 1 - 2 * 3 - 4 + 5;

Is n equal to -2? You might think so if you just compute from left to right. Therefore if you compile this in a program and print out the result you'll search out that Java thinks n is equal to -4. Java got in which number since it performs all multiplications before it performs any additions or subtractions. If you such as you can think of the calculation Java did as being:

int n = 1 - (2 * 3) - 4 + 5;

This is an subject of order of evaluation. Within the limited number of operators you've learned so far here is how Java calculates:

  1. *, /, % Do all multiplications, divisions and remainders from left to right.
  2. +, - Do additions and subtractions from left to right.
  3. = Assign the right-hand side to the left-hand side

Related Discussions:- Explain operator precedence in java

Saaa, Write a program to find the area under the curve y = f(x) between x =...

Write a program to find the area under the curve y = f(x) between x = a and x = b, integrate y = f(x) between the limits of a and b.

Program a pong game using rmi, Using RMI, program a PONG game that enables ...

Using RMI, program a PONG game that enables two users to play against one another. Pong class: package graphics;/* * Copyright (c) 2006, Your Corporation. All Rights Reserved. */

Prepare simple spring maven task, Prepare Simple spring maven task Proje...

Prepare Simple spring maven task Project Description: We want a very simple delivery for one of our tasks using Spring STS Maven project. This chat does not have UI interf

What is constructor, What is Constructor? A constructor is used to init...

What is Constructor? A constructor is used to initialize a newly created object. It's called just after memory is allocated for the object. It can be used to initial

Is jsp technology extensible?, YES. JSP technology is extensible by the dev...

YES. JSP technology is extensible by the development of custom actions, or tags, which are encapsulated in tag libraries. #question..

Code, Write a programme to create a webpage that prints the name of the STU...

Write a programme to create a webpage that prints the name of the STUDENT database in Wide Latin font and set the subtitle with description of the STUDENT to the screen. Set the pa

How to passing parameters to applets, How to Passing Parameters to Applets ...

How to Passing Parameters to Applets ? Parameters are passed to applets in NAME=VALUE pairs in tags among the opening and closing APPLET tags. Inside the applet, you read th

Describe the superclass in inheritance, Describe the Superclass in Inherita...

Describe the Superclass in Inheritance ? In this example you start through defining a more common MotorVehicle class. public class MotorVehicle { private String licensePlat

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd