Java Reference
In-Depth Information
of the first values will execute the first statements section, whereas values four and five will
execute the second statements section.
The default case is optional. If no default is given, it may happen that no case is
The break statement after the default (or the last case, if there is no default) is not needed
but is considered good style.
From Java 7, the expression used to switch on and the case labels may be strings.
switch (day) {
case 1: dayString = "Monday" ;
break ;
case 2: dayString = "Tuesday" ;
break ;
case 3: dayString = "Wednesday" ;
break ;
case 4: dayString = "Thursday" ;
break ;
case 5: dayString = "Friday" ;
break ;
case 6: dayString = "Saturday" ;
break ;
case 7: dayString = "Sunday" ;
break ;
default : dayString = "invalid day" ;
break ;
switch (dow.toLowerCase()) {
case "mon":
case "tue":
case "wed":
case "thu":
case "fri":
break ;
case "sat":
case "sun":
break ;
Java has three loops: while , do-while , and for . The for loop has two forms. Both while and do-
while are well suited for indefinite iteration. The for-each loop is intended for definite iteration
over a collection, and the for loop falls somewhere between the two. Except for the for-each
loop, repetition is controlled in each with a boolean expression.
Search WWH ::

Custom Search