The purpose of a switch statement is to provide a convenient and simple method of making multi-branch selections based upon integer, enumeration, or String expression. The switch statement has the following basic form:
switch ( expression ) {
//case clauses
}There are usually multiple case clauses within the statement block. The basic form of the case clause uses the case keyword followed by a colon, zero or more statements, and usually a break statement. The break statement consists of a single keyword, break, shown as follows:
case <constant-expression>: //statements break;
There is also an optional default clause that can be used. This will catch any values not caught by a case clause. This is demonstrated as follows:
default: //statements break; // Optional
The basic form of the switch statement is shown as follows:
switch (expression) {
case value: statements
case value: statements
…
default: statements
}