The Java if...else statement is used to run a block of code under a certain condition and another block of code under another condition. In this tutorial, we will learn about if...else statements in Java with the help of examples.

The if-then statement is the most basic of all the control flow statements. It tells your program to execute a certain section of code only if a particular test evaluates to true . For example, the Bicycle class could allow the brakes to decrease the bicycle's speed only if …

Java has the following conditional statements: Use if to specify a block of code to be executed, if a specified condition is true; Use else to specify a block of code to be executed, if the same condition is false; Use else if to specify a new condition to test, if the first condition is false

Nov 22, 2024 · The Java if statement is the most simple decision-making statement. It is used to decide whether a certain statement or block of statements will be executed or not i.e. if a certain condition is true then a block of statements is executed otherwise not. Example:

Java provides several types of control flow statements: 1. If Statement. The if statement is used to test a condition. If the condition evaluates to true, the block of code inside the if statement is executed. // code to be executed if condition is true . public static void main(String[] args) { int num = 10; if (num > 0) {

Sep 11, 2022 · When there is an if statement inside another if statement then it is called the nested if statement. Statement1 would execute if the condition_1 is true. Statement2 would only execute if both the conditions ( condition_1 and condition_2) are true. Output: This is how an if-else statement looks:

Jul 3, 2019 · Often, a Java program needs to execute more than one statement if a condition is true. This is achieved by using a block (i.e., enclosing the statements in curly brackets): isChild = true; discount = 10; This form of the. statement can be extended to have statements that are executed when the condition is false. The.

Examples for the If Statement. 1. Check if a Number is Positive. This example checks whether a number (x) is positive. If it is, a message is printed to the console. Main.java. public class Main { public static void main(String[] args) { int x = 10; if (x > 0) { System.out.println("x is positive."); } } } Output: x is positive.

In Java, the most basic kind is called the if statement. In order to give you an example, I will need to show you some code. Start up Eclipse or whatever Java editor you use (I highly recommend Eclipse!) Lets create an integer variable and set its value to 3. Assume that this piece of code is inside of a main method that belongs to a class.

Jan 2, 2023 · Java if-else statements help the program execute the blocks of code only if the specified test condition evaluates to either true or false. The if-else statement in Java is the most basic of all the flow control statements.