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	Switch One of the three branching mechanisms in Java (other ?if and if else statements) implements branching - one of a number of different branches is executed each branch statement starts with the word case, followed by a constant called a case label, followed by a colon, and then a sequence of statements (see general formula below) there can also be a section labeled default (optional, usually placed last) it can be used to output an error message How it works when the controlling expression is evaluated, the code for the case label whose value matches the controlling expression is executed if no case label matches, then the only statements executed are those following the default label the switch statement ends when it executes a break statement, or when the end of the switch statement is reached when the computer executes the statements after a case label, it continues until a break statement is reached if the break statement is omitted, then after executing the code for one case, the computer will go on to execute the code for the next case General Formula Switch (Controlling_Expression) //choice of which branch to execute is determined by the controlling expression //must evaluate to char or int { case Case_Label_1; Statement_Sequence_1 Break; //break statement case Case_Label_2; Statement_Sequence_2 Break; case Case_Label_n; Statement_Sequence_n Break; //each case label must be same type as controlling expression //each case label must only appear once Default: Default_Statement Sequence Break; } Example public swExample () {     int day = IBIO.inputInt ("Enter a number between 1 and 7 >>");     System.out.print ("That day of the week is : ");     switch (day)     {         case 1:             System.out.println ("Sunday");             break;         case 2:             System.out.println ("Monday");             break;         case 3:             System.out.println ("Tuesday");             break;         case 4:             System.out.println ("Wednesday");             break;         case 5:             System.out.println ("Thursday");             break;         case 6:             System.out.println ("Friday");             break;         case 7:             System.out.println ("Saturday");             break;     } }