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

Difference between bean factory and application context, On the surface, an...

On the surface, an application context is similar as a bean factory. But application context offers much more.. ? Application contexts give a means for resolving text messages,

Mine craft plug-in coder, Mine craft plug-in Coder Project Description: ...

Mine craft plug-in Coder Project Description: Some custom plugging for my Mine craft server. Skills required: Java, Editing

Develop an ehospital project, Develop an ehospital project Project Descr...

Develop an ehospital project Project Description: I am preparing ehopsital project.for the requires of hospital in that patient registration and billing module and stores mod

Agile software development processes, Agile software development process is...

Agile software development process is receiving popularity  and  momentum  across organizations. Highest priority is to satisfy the end user. Welcome requirement modifie

Describe the life cycle methods of a jsp? , 1. Pre-translated: Before the...

1. Pre-translated: Before the JSP file has been compiled and translated into the Servlet. 2. Translated: The JSP file has been compiled and translated as a Servlet. 3. I

BLP java program, could you please help me with my assignment. My program ...

could you please help me with my assignment. My program need to implement a multi{level role based database script SQL-like generation program. Or part of one anyway. Start with a

Android, What is basic of android?

What is basic of android?

Exception handling in EJB, Java has two kinds of exceptions: 1. Checked ...

Java has two kinds of exceptions: 1. Checked exception: handled from java.lang.Exception but not java.lang.RuntimeException. 2. Unchecked exception: handled from java.lang.Ru

Medical services referral system - websphere administrator, Medical Service...

Medical Services Referral System:       Role : Websphere Administrator       Involved in Exposure to load balancing tools (BigIP, WAS plug-ins) and Siteminder.

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