Logging APIs
Use Java Logging to track what's happening in a Java bill splitting application.
Latihan ini adalah bagian dari kursus
Data Types and Exceptions in Java
Petunjuk latihan
- Add the
importstatement with the package containing Java's logging capability. - Create a
Loggerobject from theLoggerclass and name it after the class it is in. - Log the bill amount for each person as computed in
computeEachBill()with log levelINFO. - Log the exception when the number of persons entered is not positive in the catch block of
computeEachBill()with log levelSEVERE.
Latihan interaktif praktis
Cobalah latihan ini dengan menyelesaikan kode contoh berikut.
// Import the package containing Java's logging capability
import java.util.____.*;
public class SplitTheBill {
// Get a Logger object named for the class
private static Logger logger = Logger.____("____");
public static void main(String[] args) {
computeEachBill (150, 5);
computeEachBill(100, 0);
}
public static void computeEachBill(int bill, int people){
try {
int ea = bill/people;
// Add a log entry, at INFO level, with the bill for each person
logger.____(Level.____, "Bill for each person is: " + ea);
} catch (ArithmeticException e) {
// Add a log entry, at SEVERE level, that the people splitting must be positive
logger.____(Level.____, "You forgot to provide a positive number of people for splitting: " + bill);
}
}
}