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| Name | switch |
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|---|---|---|---|---|---|---|---|
| Examples |
int num = 1;
switch(num) {
case 0:
println("Zero"); // Does not execute
break;
case 1:
println("One"); // Prints "One"
break;
}
char letter = 'N';
switch(letter) {
case 'A':
println("Alpha"); // Does not execute
break;
case 'B':
println("Bravo"); // Does not execute
break;
default: // Default executes if the case labels
println("None"); // don't match the switch parameter
break;
}
// Removing a "break" enables testing
// for more than one value at once
char letter = 'b';
switch(letter) {
case 'a':
case 'A':
println("Alpha"); // Does not execute
break;
case 'b':
case 'B':
println("Bravo"); // Prints "Bravo"
break;
}
| ||||||
| Description | Works like an if else structure, but switch is more convenient when you need to select between three or more alternatives. Program controls jumps to the case with the same value as the expression. All remaining statements in the switch are executed unless redirected by a break. Only primitive datatypes which can convert to an integer (byte, char, and int) may be used as the expression parameter. The default is optional. | ||||||
| Syntax |
switch(expression)
{
case label:
statements
case label: // Optional
statements // "
default: // "
statements // "
}
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| Parameters |
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| Related | case default break if else |
