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Scanner scanner = new Scanner(System.in);
char ch = scanner.next().charAt(0);
nextChar() in java
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import java.util.*;
public class Main {
public static void main(String[] args) {
Scanner object = new Scanner(System.in);
char button = object.next().charAt(0);
switch (button) {
case 'a':
System.out.println("hello");
break;
case 'b':
System.out.println("holla");
break;
case 'c':
System.out.println("bonjour");
break;
default:
System.out.println("not 1 ,2,3");
}
}
}