Describe the if statement in java, JAVA Programming

Assignment Help:

Describe the if statement in Java ?

All but the most trivial computer programs required to form decisions. They test a condition and operate in a different way based on the outcome of the test. This is quite common in actual life. For example you stick your hand out the window to test if it's raining. If it is raining then you take an umbrella along with you. If it isn't raining then you don't.

All programming languages have some form of an if statement in which tests conditions. In the previous code you should have tested whether there in fact were command line arguments before you tried to use them.

Arrays have lengths and you can access in which length through referencing the variable arrayname.length You test the length of the args array as follows.

// This is the Hello program in Java

class Hello {

public static void main (String args[]) {

if (args.length > 0) {
System.out.println("Hello " + args[0]);
}

}

}
System.out.println(args[0]) was wrapped in a conditional test, if (args.length > 0) { }. The code within the braces, System.out.println(args[0]), now gets executed if and only if the length of the args array is greater than zero.

The arguments to a conditional statement such as if must be a boolean value, that is something that evaluates to true or false. Integers are not permissible.

In Java numerical greater than and lesser than tests are completed along with the > and < operators respectively. You can test whether a number is less than or equal to or greater than or equal to another number along with the <= and >= operators.


Related Discussions:- Describe the if statement in java

Overloading method, QUESTION 3: Overloaded methods Write the overloaded me...

QUESTION 3: Overloaded methods Write the overloaded method named average () for each of the following problems: a) The first method receives THREE (3) integer values and returns

Array to store 10messages of type String., Ask1. Storing the Array: Write a...

Ask1. Storing the Array: Write an application that uses an Array to store 10messages of type String. You will store this Array with 10 messages of your choosing. For example, a mes

Control structures, JavaScript supports the normal control structures: ...

JavaScript supports the normal control structures: The conditionals if, if...else, & switch; The iterations for, while, do...while, break, & continue;

Javascript validarion, 1. Obtaining the new script: Download and save the a...

1. Obtaining the new script: Download and save the attached comment CGI mailer script form-mail2.pl to your server''s cgi-bin directory, and change the permissions on the script to

Explain difference between method overriding and overloading, What is the d...

What is the difference between method overriding and overloading? Overriding is a method with the same name and arguments as in a parent, whereas overloading is the same met

Loop, write a program for loop

write a program for loop

Reading or writing disk files, For this assignment, you will simulate a fil...

For this assignment, you will simulate a file system. You will be neither creating files nor reading or writing disk files. Rather, you will have a simulation of a file system that

Extraction of articles, Extraction of articles The software I'm looking ...

Extraction of articles The software I'm looking to build: 1. Extraction of articles from various sites 2. Format the content to re-post 3. Automate the process Skill

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