1/6/2024 0 Comments Break outside switch case javaAt runtime jvm is responsible to perform that operation. If any operation involves at least one variable compiler won't perform that operation.If any operation involves only constants then compiler is responsible to perform that operation.Every final variable will be replaced with the corresponding value by compiler.Unreachable statement in while: Example 6:ĮxampleWhile.java:7: unreachable statementĮxampleWhile.java:4: unreachable statementĮxampleWhile.java:8: unreachable statement Example 1:Ĭurly braces are optional and without curly braces we can take only one statement which should not be declarative statement. If we are using any other type we will get compile time error. The argument to the while statement should be Boolean type. If we don't know the no of iterations in advance then best loop is while loop: Example 1: With in the switch we can take the default any where, but it is convension to take default as last case.If no other case matched then only default case will be executed.With in the switch we can take the default only once.The main advantage of fall-through inside a switch is we can define common action for multiple cases Example 7: This is call "fall-through" inside the switch. With in the switch statement if any case is matched from that case onwards all statements will be executed until end of the switch (or) break. Example 5:ĮxampleSwitch.java:10: possible loss of precisionĮxampleSwitch.java:10: duplicate case label Example 4:Įvery case label should be within the range of switch argument type. Example 2:ĮxampleSwitch.java:9: constant expression requiredĬase y: If we declare y as final we won't get any compile time error.īut switch argument and case label can be expressions, but case label should be constant expression. Independent statements are not allowed.ĮxampleSwitch.java:5: case, default, or '}' expectedĮvery case label should be " compile time constant" otherwise we will get compile time error. In the above-given example break statement is placed in each case of the switch statement. Every statement inside switch must be under some case (or) default.
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