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

Difference between inheritance and polymorphism, Question 1: a) What is...

Question 1: a) What is the meaning of an object-oriented programming? b) List eight simple types of data in Java c) Explain how objects and classes are closely related.

Explain the phase compile- java program development, Explain the phase Comp...

Explain the phase Compile- Java Program Development In Phase 2, programmer gives the command javac to compile the program. Java compiler translates the java program into byte

Project, Hey, i have a project on java can you help me

Hey, i have a project on java can you help me

Explain about the interpreter in java, Machines should have Java interprete...

Machines should have Java interpreter for the Java byte code to get implemented. Linking is a very simple process and this feature helps while developing applications. Java compile

What are logic- or time-bombs, What are Logic- or Time-Bombs ? It execu...

What are Logic- or Time-Bombs ? It execute the payload while predetermined event occurs. For instance use kind's particular phrase and particular data is reached.

Explain testing objects for equality in java, Explain Testing Objects for E...

Explain Testing Objects for Equality in java? , = can only be used with numbers and characters. They cannot be used with Strings, booleans, arrays or other compound types sin

Insert admob code into android application, Need to Insert Admob Code Into ...

Need to Insert Admob Code Into Android Application Project Description: We are seeking Android developer to add Admob code in to our application. It should be very simple

Java and Arrays, AskWrite an application that uses an Array to store 10mess...

AskWrite 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 message could be “I love

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