Java 11 and 12 – New Features

How not to use labels and continue in switch expressions

You can use labels and a continue statement within switch expressions. However, you can't jump through switch expressions by using them as follows. Here's an example:

class Planet { 
    private static long damage; 
    public void use(SingleUsePlastic plastic) { 
        myLabel:                                           // Label  
            for (...) { 
                damage += switch(plastic) { 
                    case SPOON, FORK, KNIFE : break 7;    
                    case PLATE : continue myLabel;         // NOT                                                            // allowed 
                                                           // illegal                                                                                                                       // jump 
                                                           // through                                                                                                                        // switch 
                                                          // expression 
                }; 
            } 
    } 
}