public interface Lunchable { void run(); } public abstract class Launcher implements Lunchable { public final void launch() { // ... run(); // ... } } public class MyAppLauncher extends Launcher { @Override public void run() { } } public class MyAppLauncher extends Launcher { @Override public void run() { } } public class Main { public static void main(String[] args) { MyAppLauncher launcher = new MyAppLauncher(); launcher.launch(); } }


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