Java Code Example If Statement

If str null strisEmpty complainAboutUnusableString. If x 1 error if x 1 valid comparison.

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The Java if statement tests the condition.

Java code example if statement. Ifx 1 error. But what if we want to do something else if the condition is false. This will produce the following result.

Specified condition inside if statement if a. The if statement alone tells us that if a condition is true it will execute a block of statements and if the condition is false it wont. If the condition is evaluated to true the code inside the body of if is executed.

Public class IfStatementExample public static void mainString args int num70. If this test evaluates to false meaning that the bicycle is not in motion control jumps to the end of the if-then statement. Java if-else statement with Examples.

Following is the syntax of an ifelse statement. Public class Test public static void mainString args int x 30. Public class example public static void mainString args int a10.

This is else statement. For example if you need to test whether a String is not null or empty you can write. Example of using if else Java statement The following examples uses two integer variables a and b.

In Java the most basic kind is called the if statement. If x is Not a Number or less than 1 or greater than 10 output input is not valid. Decision Making in Java helps to write decision driven statements and execute a particular set of code based on certain conditions.

If str null. Example of Java If Statement Here in the example given below contains the class JavaIfExample with the main class contains the if condition. For example to compare if two variables are equal to each other we use.

Ifx 1 valid comparison. Get the value of the input field with idnumb. If condition the body of if The if statement evaluates the condition inside the parenthesis.

Try it Yourself. If variable a value is less than b then it will execute the statement inside the curly braces. If statement is used to.

If we do not provide the curly braces and after if condition then by default if statement will consider the immediate one statement. See the example below where we compare if x is equal to 1. The if condition checks whether the variable a value is less than b.

The defined variable i is a. If condition code to be executed Example. In order to give you an example I will need to show you some code.

Else SystemoutprintThis is else statement. Example of if statement. Public static void mainString args.

Public class SimpleIfStatementExample. No it will not be evaluated. The syntax of the if statement is.

If condition lines of code to be executed if the condition is true else lines of code to be executed if the condition is false You can use IfElse statement if you have to check two conditions and execute a different set of codes. This Java Example shows how to use if statement in Java program. If num 100 This println statement will only execute if the above condition is true Systemoutprintlnnumber is less than 100.

Else otherwise print the below statement Systemoutprintlna is greater than 5. Else doSomethingWithstrcharAt0. And this is very useful.

If x is a number between 1 and 10 output Input OK. If Boolean_expression 1 Executes when the Boolean expression 1 is true else if Boolean_expression 2 Executes when the Boolean expression 2 is true else if Boolean_expression 3 Executes when the Boolean expression 3 is true else Executes when the none of the above condition is true. Output.

Assume that this piece of code is inside of a main method that belongs to a class. The if statement in Java accepts boolean values and if the value is true then it will execute the block of statements under it. Or the other way around.

Decrease current speed currentSpeed--. A simple equal sign is an assignment. Else SystemoutprintlnGood evening.

If time 18 SystemoutprintlnGood day. Void applyBrakes the if clause. Bicycle must be moving if isMoving the then clause.

If x 20 SystemoutprintThis is if statement. It executes the if block if condition is true. Start up Eclipse or whatever Java editor you use I highly recommend Eclipse Lets create an integer variable and set its value to 3.

If condition block of code to be executed if the condition is true else block of code to be executed if the condition is false Example int time 20.

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