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

Implement queues - linked list, Implement Queues / Linked List Project D...

Implement Queues / Linked List Project Description: In this project, two kinds of queue are implemented: LinkedQueue implements FIFOQueueInterface { .... } and LLQueueItr imp

List down the analytical engine''s elements name, List down the Analytical ...

List down the Analytical Engine's elements name An analytical engine elements are as follows: Input Memory Processor Output.

Explain JMS, JMS ((java messaging service))is an acronym used for Java Mess...

JMS ((java messaging service))is an acronym used for Java Messaging Service. It is Java's answer to formed software using asynchronous messaging. It is one of the official specific

Multiple choices output and codes, codes and output on how to make multiple...

codes and output on how to make multiple choices quiz

Cryonic labs, Cryonic Labs Project Description: Seeking people to col...

Cryonic Labs Project Description: Seeking people to collaborate with in designing gaming apps and mobile apps for the Android Market. I'm presently a student in Computer Engi

What is operator overloading, What is Operator Overloading? A few objec...

What is Operator Overloading? A few object oriented languages, notably C++, permit you to not only overload techniques but also operators like + or -. This is very menaingful w

Program for convert temprature and length, Public class ConversionProgram {...

Public class ConversionProgram {  public void start() {    String userChoice = askConversionCategory();   while (userChoice.equals("1") || userChoice.equals("2") || Page 2

Area under curve, write a program to find the area under thecurve y=f(x)bet...

write a program to find the area under thecurve y=f(x)between x=a and x=b, integrate y=f(x) between the limits of a and b. the area under a curve between two points can be found by

Create a simple object based gui application, Objective: create a simple o...

Objective: create a simple object, put that object in a simple collection class, use that object and collection in a simple GUI application. Specification:  Consider a Librar

JAVA IF/ ELSE, #This assignment will give you practice with interactive pro...

#This assignment will give you practice with interactive programs, if/else statements and methods that return values. You are to write a program that prompts the user for informati

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