CP1344: PROGRAMMING IN JAVA - LECTURE -24-DECISION-MAKING STATEMENTS (THE SWITCH STATEMENT)-BCA- S3

The Switch Statement

Java has a built-in multiway decision statement known as switch. The switch statement tests the value of a given variable (or expression) against a list of ease values and when a match is found, a block of statements associated with that case is executed.
The expression is an integer expression or characters. value-1, value-2 .... are constants or constant expressions (evaluable to an integral constant) and are known as case labels, Each of these values should be unique within a switch statement. block-1, block-2 .... are statement lists and may contain
zero or more statements. There is no need to put braces around these blocks but it is important to note that case labels end with a colon (:).
When the switch is executed, the value of the expression is successively compared against the values value-1, value-2, .... if a case is found whose value matches with the value of the expression, then the block of statements that follows the case are executed.

The break statement at the end of each block signals the end of a particular case and causes an exit from the switch statement, transferring the control to the statement-x following the switch.
The default is an optional case. When present, it will be executed if the value of the expression does
not match with any of the case values. If not present, no action takes place when all matches fail and the control goes to the statement-x.