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

State the java programmer efficiency, State the Java Programmer Efficiency ...

State the Java Programmer Efficiency Faster Development Building an application in Java takes about 50% less time than in C or C++. So, faster time to market Java is said to

What are the core classes of the struts framework, Struts is a set of coope...

Struts is a set of cooperating classes, servlets, and JSP tags that make up a reusable MVC 2 design. ? JavaBeans components for managing application state and behavior. ? Eve

Concurrent Programming, Problem 1 A savings account object holds a non-nega...

Problem 1 A savings account object holds a non-negative balance, and provides deposit(k ) and withdraw(k ) methods, where deposit(k ) adds k to the balance, and withdraw(k ) subtra

Is java is network oriented or not, Distributed / Network Oriented Java...

Distributed / Network Oriented Java is network friendly -- both in its portable, threaded nature, and since common networking operations are built-in to the Java libraries.

Need graphic designer and developer, My name is Myers, the project director...

My name is Myers, the project director of an online business that is scheduled to commence this summer in Nigeria. We are in the process of recruiting members to the project team a

Concept of events and events listeners and events handlers, Question: (...

Question: (a) State and explain clearly FIVE new features of Actionscript 3.0 as compared to Actionscript 2.0. (b) Explain clearly the concept of events and events listen

Test phases and cycles? , 1. Unit tests :There are two popular processe...

1. Unit tests :There are two popular processes to testing server-side classes: mock objects, which test classes by checking the server container, and in-container testing, which

Explain arithmetic promotion and binary operations, Explain Arithmetic Prom...

Explain Arithmetic Promotion and Binary Operations? An int divided through an int is an int, and a double divided by a double is a double, but what about an int divided by a do

Servlet pages from being cached by the browser, How do I prevent the output...

How do I prevent the output of my JSP or Servlet pages from being cached by the browser? Ans) You will require to set the appropriate HTTP header attributes to stop the dynamic

Can a human doctor be replaced through an expert system, Can a human doctor...

Can a human doctor be replaced through an Expert System? Give reasons to support your answer. Expert System is a computer system that simulates the knowledge and expertise of a

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