#15 Switch Statement in Java

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YouTube Excerpt: Check out our courses: Java Spring Boot AI Live Course: https://go.telusko.com/JavaSpringBootAI Coupon: TELUSKO20 (20% Discount) AI Powered DevOps with AWS - Live Course :- https://go.telusko.com/AIDevOps-AWS Coupon: TELUSKO20 (20% Discount) Master Java Spring Development : https://go.telusko.com/masterjava Coupon: TELUSKO20 (20% Discount) For More Queries WhatsApp or Call on : +919008963671 website : https://courses.telusko.com/ Udemy Courses: Spring: https://go.telusko.com/udemyteluskospring Java:- https://go.telusko.com/udemyteluskojava Java Spring:- https://go.telusko.com/Udemyjavaspring Java For Programmers:- https://go.telusko.com/javaProgrammers Python : https://go.telusko.com/udemyteluskopython Git : https://go.telusko.com/udemyteluskogit Docker : https://go.telusko.com/udemyteluskodocker Instagram : https://www.instagram.com/navinreddyofficial/ Linkedin : https://in.linkedin.com/in/navinreddy20 TELUSKO Android App : https://go.telusko.com/TELUSKOAPP TELUSKO IOS App : https://apple.co/3SsgmU2 Discord : https://discord.gg/D8hWe9BqfF In this lecture we are discussing: 1) What is switch statement? 2) why we need switch statement? 3) What datatype can we use in switch? 4) Syntax of switch and example 5) Need of break 6) Need of default #1 -- switch statement is a multiway branch statement that 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 switch case. #2 if we have multiple test cases and we want to test for a particular value then we can use switch statement. At the place switch we can also use if-else-if ladder. e.g suppose user enter a your date of birth and we want to check from multiple year then in this case we can use switch case. #3 what dataType we can use in switch statement? -- the switch statement can have a number of possible execution paths. A switch works with the byte, short, char, and int primitive data types. It also works with enumerated types (discussed in Enum Types), the String class, and a few special classes that wrap certain primitive types: Character, Byte, Short, and Integer. #4 Syntax of Switch and example: switch(variable){ case x1: //code break; case x2: //code break; default: //code } example: int x=9; switch(x){ case 8: System.out.println("8"); break; case 7: System.out.println("7"); break; default: System.out.println("No match found"); } #5 Need of break -- The break statements are necessary because without them, statements in switch blocks fall through: All statements after the matching case label are executed in sequence, regardless of the expression of subsequent case labels, until a break statement is encountered. The program shows statements in a switch block that fall through. int x=5; switch(x){ case 5: System.out.println("five"); case 4: System.out.println("six); default: System.out.println("default"); } output: five six default Since, we are not using break after matching the case 5 it execute all remaining statements without check. #6 Need of default: The default section handles all values that are not explicitly handled by one of the case sections. example: int y=9; switch(y){ case 8: System.out.println("8"); break; case 7: System.out.println("7"); break; } In this case you don’t get any result because no case is match and since no default case is available so, nothing we get. Github repo : https://github.com/navinreddy20/Javacode.git More Learning : Java :- https://bit.ly/3x6rr0N Python :- https://bit.ly/3GRc7JX Django :- https://bit.ly/3MmoJK6 JavaScript :- https://bit.ly/3tiAlHo Node JS :- https://bit.ly/3GT4liq Rest Api :-https://bit.ly/3MjhZwt Servlet :- https://bit.ly/3Q7eA7k Spring Framework :- https://bit.ly/3xi7buh Design Patterns in Java :- https://bit.ly/3MocXiq Docker :- https://bit.ly/3xjWzLA Blockchain Tutorial :- https://bit.ly/3NSbOkc Corda Tutorial:- https://bit.ly/3thbUKa Hyperledger Fabric :- https://bit.ly/38RZCRB NoSQL Tutorial :- https://bit.ly/3aJpRuc Mysql Tutorial :- https://bit.ly/3thpr4L Data Structures using Java :- https://bit.ly/3MuJa7S Git Tutorial :- https://bit.ly/3NXyCPu Donation: PayPal Id : navinreddy20 https://www.telusko.com

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