How to use Switch statement in Java | 100% best for beginners

Switch Statement in Java

This is how switch statement works in java

• switch is used to be tested equally by the list of values in a variable

• Each value is called a case to be check from a variable expression in the switched

• break keyword is used to stop the execution of a case block. When Java reaches the break keyword then it means that there’s a match found in a case and the execution stops.

• default keyword is similar to else when you are using the IF statement. When a value of a variable doesn’t match the value in the case then the default keyword will then execute and stop.

Sample Code

import java.util.Scanner;

/**
*
* @author KENSOFT
*/
public class Switch {

/**
* @param args the command line arguments
*/
public static void main(String[] args) {
Scanner scan = new Scanner(System.in);
System.out.print("Please choose a letter from A-C: ");
char input = scan.next().charAt(0);
String value = String.valueOf(input);
switch (value){
case "a":
System.out.println("You entered A");
break;
case "b":
System.out.println("You entered B");
break;
case "c":
System.out.println("You entered C");
break;
default:
System.out.println("Out of Scope");
break;
}
}

}

Scanner class in Java is used for obtaining the input value. next() function is used to return the next word in the input as a string and the charAt(0) returns the first character input in that string.

Output

Please choose a letter from A-C: b
You entered B

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