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

Create an embedded javascript function, Given the following XHTML page: ...

Given the following XHTML page:   Create an embedded JavaScript function named getUserInfo that prompts the user with the following two questions after the XHTML page has loa

What types of new jobs are created because of computing, What types of new ...

What types of new jobs are created because of computing? And that old professions are being eliminated? Because of computing whereas people are getting benefits from automated

Extensible messaging and presence protocol, According to XMPP Standards Fou...

According to XMPP Standards Foundation "XMPP is the Extensible Messaging and Presence Protocol, a set of open technologies for instant messaging, presence, multi-party chat, voice

I need ios and android developer, We need a very good iOS and/or Android de...

We need a very good iOS and/or Android developer preferred to be from Egypt. He will be responsible in developing iOS or/ and Android apps for a company. All details will be provid

Indeed api integration and search bar fix, Indeed API integration and searc...

Indeed API integration and search bar fix (Java, Wordpress and PHP) I start a job portal on WP developed out of a customized template. We need an expert in integrating Indeed AP

I want five page website design, I want five page website design Project...

I want five page website design Project Description: Five page website CMS Front end design Skills required are Graphic Design, Java, HTML, PHP, Website Design

What is the difference between SOA and a Web Service, Normal 0 ...

Normal 0 false false false EN-US X-NONE X-NONE

Java developer with spring framework prerequisite, Java developer with spri...

Java developer with spring framework prerequisite from anywhere Let me know that you have proven experience in java with spring frame work. Send some sample data and provide inf

Which models are supported by jms, Which models are supported by JMS? Pleas...

Which models are supported by JMS? Please, explain them. Ans) Publish or subscribe (pub/sub). This model permits a client (publisher) to send messages to a JMS topic. These mess

Search on column demonstration in semantic vector, Search on column demonst...

Search on column demonstration in Semantic Vector Project Description: I am preparing a research on Semantic Vectors. But I am not able to check out in a vector representa

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