Method call

example/src/main/java/com/example/JabelExample.java:36–50

()

        var callable = new Callable<>() {

            @Override
            public String call() {
                // Var in lambda parameter
                Function<Object, String> function = (var prefix) -> {
                    // Pattern Matching in instanceof
                    // https://openjdk.java.net/jeps/305
                    if (prefix instanceof String s) {
                        return s + Integer.toString(0);
                    } else {
                        throw new IllegalArgumentException("Expected string!");
                    }
                };
                // Test indy strings
                return function.apply("idk ");
            }
        };

        var closeable = new AutoCloseable() {