String to control a switch statement

Using a string to control a switch statement

• Before JDK 7, the switch could only be controlled by integer types such as int or char.

• This limited switch usage when action selection was based on the contents of a String.

• In these cases, it was common to use an if-else-if ladder.

• With JDK 7, it became possible to use String to control switches, making the code more readable and optimized in various situations.

• Example:

• Output:
  Canceling

• The switch checks the value of command against the case constants, executing the code corresponding to the first match found.

• Using switch with String can improve code readability and is more convenient than a sequence of if/else.

• However, using a switch with a String may be less efficient than using a switch with an integer.

• It is recommended to use switch with String only when the control data is already in that form, avoiding unnecessary use.

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