Try running in JDK 8u20 under debugger, then uncomment noted line and JPDA hot-reload. Does not work.

ReloadDemo.java

import java.util.Date;
import java.util.function.Consumer;
public class ReloadDemo {
    public static void main(String[] args) throws InterruptedException {
        while (true) {
            run((String x) -> System.out.println(x + " first"));
            run((String x) -> System.out.println(x + " second"));
            //run((String x) -> System.out.println(x + " third"));
            Thread.sleep(1000);
        }
    }
    private static void run(Consumer<String> c) {
        c.accept("Hello @" + new Date());
    }
}