public String getTypeOfDayWithSwitchStatement(String dayOfWeekArg) {
String typeOfDay;
switch (dayOfWeekArg) {
case "Monday":
typeOfDay = "Start of work week";
break;
case "Tuesday":
case "Wednesday":
case "Thursday":
typeOfDay = "Midweek";
break;
case "Friday":
typeOfDay = "End of work week";
break;
case "Saturday":
case "Sunday":
typeOfDay = "Weekend";
break;
default:
throw new IllegalArgumentException("Invalid day of the week: " + dayOfWeekArg);
}
return typeOfDay;
}
The switch statement compares the String object in its expression with the expressions associated with each case label as if it were using theString.equalsmethod; consequently, the comparison of String objects in switch statements is case sensitive.
The Java compiler generates generally more efficient bytecode from switch statements that use String objects than from chained if-then-else statements.
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