IT. Expert System.

The default keyword is used to label the default branch in a switch statement. A default block does not have an implicit ending point. A break statement is typically used at the end of each case or default block to exit the switch statement upon completion of the block. Without a default statement, a switch statement whose argument matches no case blocks will do nothing.

Syntax:

switch(ch){
case 1: statement;
             break;
default: statement;
}

Example:

import java.time.*;
import java.lang.*;
import java.util.*;

public class SimpleTimeClient implements TimeClient {
    
    private LocalDateTime dateAndTime;
    
    public SimpleTimeClient() {
        dateAndTime = LocalDateTime.now();
    }
    
    public void setTime(int hour, int minute, int second) {
        LocalDate currentDate = LocalDate.from(dateAndTime);
        LocalTime timeToSet = LocalTime.of(hour, minute, second);
        dateAndTime = LocalDateTime.of(currentDate, timeToSet);
    }
    
    public void setDate(int day, int month, int year) {
        LocalDate dateToSet = LocalDate.of(day, month, year);
        LocalTime currentTime = LocalTime.from(dateAndTime);
        dateAndTime = LocalDateTime.of(dateToSet, currentTime);
    }
    
    public void setDateAndTime(int day, int month, int year,
                               int hour, int minute, int second) {
        LocalDate dateToSet = LocalDate.of(day, month, year);
        LocalTime timeToSet = LocalTime.of(hour, minute, second); 
        dateAndTime = LocalDateTime.of(dateToSet, timeToSet);
    }
    
    public LocalDateTime getLocalDateTime() {
        return dateAndTime;
    }
    
    public String toString() {
        return dateAndTime.toString();
    }
    
    public static void main(String... args) {
        TimeClient myTimeClient = new SimpleTimeClient();
        System.out.println(myTimeClient.toString());
    }
}

All information of this service is derived from the free sources and is provided solely in the form of quotations. This service provides information and interfaces solely for the familiarization (not ownership) and under the "as is" condition.