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

What is the major role of ejb 2.x in j2ee? , EJB 2.x is broadly adopted ser...

EJB 2.x is broadly adopted server side component architecture for J2EE. 1. EJB is a remote, distributed multi-tier system and allows protocols like IIOP, JRMP, and HTTP etc.

Algorithm, write algorithm to perform the following operations on it create...

write algorithm to perform the following operations on it create,insertion,deletion,for testing overflow and empty conditions.

How marketing strategies are changed along with the progress, How marketing...

How marketing strategies are changed along with the progress in computing? How latest marketing strategies are implemented? Marketing Strategy Changes along with the latest req

Write a java client by using arraylists, 1. The purpose of this problem is ...

1. The purpose of this problem is to practice using ArrayLists.Write a Java client file containing a mainmethod plus other methods as needed to solve the following problem (no clas

Write a parser, I have a parser. it is written in Java. I need to add a has...

I have a parser. it is written in Java. I need to add a hash table to it. I am wondering about if you can do it.

What are checked and unchecked exception, What are Checked and UnChecked Ex...

What are Checked and UnChecked Exception? A checked exception is some subclass of Exception (or Exception itself), excluding class RuntimeException and its subclasses. Making a

Need tomcat based iptv cms p2p, Need tomcat based iptv cms p2p , avrelay tr...

Need tomcat based iptv cms p2p , avrelay trans-coder software Project Description: Tomcat based iptv cms p2p tracker cdn included, avrelay for trans-coding h264, Skills re

Multi treading array program, You are to write a program name arrayScaling....

You are to write a program name arrayScaling.java that will randomly generate 5000 integer number raging from 1 - 49 and place them in an array. 1.  The program will scale thi

Explain java.util.random package, Explain java.util.Random package? The...

Explain java.util.Random package? The java.util.Random class permits you to create objects which generates pseudo-random numbers along with uniform or gaussian distributions ac

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