Instead of writing many if..else statements, you can use the switch statement. The switch statement selects one of many code blocks to be executed: This is how it works: The switch expression is evaluated once. The value of the expression is compared with the values of each case. If there is a match, the associated block of code is executed.

Apr 11, 2025 · In simple words, the Java switch statement executes one statement from multiple conditions. It is an alternative to an if-else-if ladder statement. It provides an easy way to dispatch execution to different parts of the code based on the value of the expression.

Unlike if-then and if-then-else statements, the switch statement can have a number of possible execution paths. A switch works with the byte, short, char, and int primitive data types.

Aug 18, 2012 · It uses a lookupswitch when there are gaps in your cases (more than one gap, or a single gap that has a value difference greater than 1). Otherwise, it uses a tableswitch which is more effecient. You can find more information here artima.com/underthehood/flowP.html.

Jun 21, 2022 · You use the switch statement in Java to execute a particular code block when a certain condition is met. Here's what the syntax looks like: switch (expression) { case 1: // code block break; case 2: // code block break; case 3: // code block break; default: // code block}

How does the switch-case statement work? The expression is evaluated once and compared with the values of each case. If expression matches with value1, the code of case value1 are executed. Similarly, the code of case value2 is executed if expression matches with value2.

Jun 11, 2024 · In this tutorial, we’ll learn what the switch statement is and how to use it. The switch statement allows us to replace several nested if-else constructs and thus improve the readability of our code. Switch has evolved over time. New supported types have been added, particularly in Java 5 and 7.

Oct 21, 2023 · In this guide, we’ll walk you through the process of using switch statements in Java, from the basics to more advanced techniques. We’ll cover everything from understanding the basic syntax, handling different types of switch cases, to troubleshooting common issues. Let’s dive in and start mastering the Java switch statement!

What is a Switch Case Statement? A switch statement evaluates a single expression and executes a block of code that matches the value of the expression. It simplifies code by eliminating the need for multiple if-else conditions and enhances readability. case value1: // code to be executed if expression equals value1 break; case value2:

Java switch statement allows a variable to be tested for equality against a list of values. Each value is called a case, and the variable being switched on is checked for each case. The switch statement can be used when multiple if-else statements are required.