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

Implementation of function, Suppose that: A is the set of characters in ...

Suppose that: A is the set of characters in the string "pellet"; B is the set of characters in the string "teller"; C is the set of characters in the string "pertinent"; a

What are inner beans, When wiring beans, if a bean element is embedded to a...

When wiring beans, if a bean element is embedded to a property tag directly, then that bean is said to the Inner Bean. The disadvantage of this bean is that it cannot be reused any

How to catch multiple exceptions explain with example, How to catch multipl...

How to catch multiple exceptions explain with example? If multiple blocks match the exception type, the first block in which matches the kinds of the exception catches it. pub

What should be output of above code, Number = new Array(5); var abc=4; for(...

Number = new Array(5); var abc=4; for(var i=1; i { Number[i]= abc*i; } Number.reverse(); for(j=0;j { document.write(" "+Number[j]+" "); } A) What should be output of above co

Student Grades Program, The program: 2 classes one called Student, one ca...

The program: 2 classes one called Student, one called Grades Functional Requirements: Ask for how many students u need to enter the program must: prompt the user to enter the

Describe the final keyword, Describe the final keyword ? The final key...

Describe the final keyword ? The final keyword is used in various different contexts as a modifier meaning in which what it modifies cannot be changed in a few sense. final c

Writing a program with all the primitive, Problem 1 Explain and Define ...

Problem 1 Explain and Define the following concepts with appropriate examples a) Superclass b) Subclass c) Inheritance d) Exceptions e) Stream classes >>Defining and expl

Problem D., In Exercise 1 you were asked to modify the Sorts program so tha...

In Exercise 1 you were asked to modify the Sorts program so that it would output the number of swaps used by a sorting method. It is a little more difficult to have the program als

Develop a visual design in java, Player Ship Appearance: • Your ship mu...

Player Ship Appearance: • Your ship must be either a nice-looking sphere (left image above), or a nice-looking sphere with a "mouth" (middle image above), depending on variant.

Continue statement in javascript, It terminates execution of the block of s...

It terminates execution of the block of statements in while or for loop & continues execution of the loop along with the next iteration. On the contrary to the break statement, con

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