How to Use the switch Statement
switch statement tests a variable for one or more cases. If the value of the variable matches the case, then the statement or statements associated with that case are executed. Equivalent code can be achieved by coding an if...else if... sequence, however, the if...else if... sequence requires the test condition to be repeated for every case, thus requiring more coding and producing code that is more challenging to maintain. To write a program that uses the
switch statement, follow these four steps.
- Open your text editor and create a new file that will contain the
switchstatement. Type in the following Java statements.
switchstatement determines the correct output based on user input.
- Save your file as UseTheswitchStatement.java.
- Open a command prompt and navigate to the directory containing your Java program. Then type in the command to compile the source and hit Enter.
- You are ready to test your program. Type in the command to run the Java runtime launcher followed by your program name and then "1". Next, hit Enter.
switchstatement correctly responded in the output. If you wish, try additional tests with other integers and even without an integer.