public class Main {
    public static enum LibVal {
        VAL_1,
        VAL_2,
        VAL_3;
    }
 
    public void libCallback(LibVal val){
        switch(val) {
            case VAL_1: System.out.println("VAL_1 was chosen");
        }
    }
    
    public static void main(String[] ignored) {
        new Main().libCallback(LibVal.VAL_1);
    }
}