switch : Java Glossary

The most common error with switch is to forget the break. Then one case falls through into the next.

// S W I T C H / C A S E
switch ( n )
   {
   case 1: System.out.println( "one" );
      break;
   case 2: System.out.println( "two" );
      break;
   default: System.out.println( "something else" );
   }// end switch (n)

Case Labels

• enum constants.
• character or numeric literals.
• the keyword default.
• A constant expression, i.e. an expression that can be evaluated at compile time.
• A constant variable (oxymoronic) for a static or instance final variable whose value is known at compile time.

• null.
• String literals.
• Local final variables.
• floating point literals.
• references other than enum constants.

Example of Use

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