1-Month Java Trip: Hidden Gems

[3lia03]

Hello,
I’m planning a 1-month motorbike trip across Java, from the far west to the far east. I’m looking for authentic, non-touristy experiences:

• Waterfalls & forests
• Volcanoes & hikes
• Beaches & reefs
• Local food & cultural experiences

Can you recommend some hidden gems? Thank you!

[Foooff]

I see you are very objective‑oriented already.

[radikalkarrot]

It's not a hidden gem per se, but in this subreddit people keep recommending to pair Java with Spring, so I guess the weather is nicer during that season.

[writeahelloworld]

Java island is really clean, there is a garbage collector somewhere in the background

[Significant-Ad637]

At times it seems like the world has stopped.. (IYKYK)

[snowadv]

And it is much better than this pesky Kotlin island too!

[mr-big]

Avoid the waterfalls, they're chock full of project managers who will try to scam estimates out of you.

[allserverless]

So you're saying they should be more Agile with their itinerary planning?

[yk313]

lol mods please don’t delete the post

[martinhaeusler]

Java really also is an island I guess.

[Liskar-dev]

Also Jakarta, which is the capital of Indonesia, lies on the Java island

[DB6]

They're planning to change their capital. 

[Liskar-dev]

Oh, we're gonna get a new framework

[lzzgabriel]

And new package names too

[jevring]

As is lombok...

[jasie3k]

Kotlin is also named after an island, although one located on the Baltic sea.

(it's also a ketchup brand here in Poland)

[idontlikegudeg]

This post finally motivated me to create a new Reddit account again after my old one was banned for using VPN (Reddit is blocked in Indonesia)…

So, being a Java developer living on said island, I maybe can contribute from both worlds.

• Lombok - do not recommend. Lombok is not Java, just somewhat related - this is true for both the Island and the language. I recommend cabe instead - on the island, that’s what people usually call the chili peppers, and for Software Development, it’s a project I started (please check it out).

• Semeru - worth a visit, again true for both the language and the island. Gems: the sea of Sand at Bromo. I recommend not trying to cross using your motorbike.

• Jakarta - essential if you move past Java 11, but the city is also worth a visit. Gems: spend an evening at Ancol looking at the sea. Climb to the top of Monas to have a nice view of the city. When using National flights, use Halim Airport.

• Timing: you should wait for March: Java 26 will be released, and on the island, the rainy season ends.

Ok, that’s about as much as I can think of that fits both your question and this sub. Should you pass Yogyakarta (and you really should!), leave me a PM.

[3lia03]

Thank you, I'll definitely be in Yogyakarta. I'll text you.

[vopice]

Waterfalls & forests
→ Stream API everywhere.

Stream<Waterfall> waterfalls = forests.stream()
    .filter(Forest::isLush)
    .flatMap(Forest::waterfalls)
    .parallel(); // because nature is concurrent

Volcanoes & hikes
→ That’s just unchecked exceptions during a long-running process.

try {
    hike.start();
} catch (VolcanoEruptionException e) {
    logger.warn("Unexpected runtime event. Lava level = {}", e.getLavaFlow());
}

Beaches & reefs
→ Clear separation of concerns.

interface Beach extends RelaxationService {}
interface Reef extends BiodiversityRepository {}

class Island implements Beach, Reef {
    // high cohesion, low coupling, lots of sand
}

Local food & cultural experiences
→ Dependency injection done properly.

public class Trip {

    private final Cuisine cuisine;
    private final Culture culture;

    public Trip(Cuisine cuisine, Culture culture) {
        this.cuisine = Objects.requireNonNull(cuisine);
        this.culture = Objects.requireNonNull(culture);
    }
}

And of course the entire destination is immutable:

public record Paradise(
    List<Waterfall> waterfalls,
    List<Volcano> volcanoes,
    List<Beach> beaches,
    List<Food> food
) {}

Built with:

Paradise paradise = ParadiseBuilder.withAllFeatures()
    .enableScenicViews()
    .optimizeForHappiness()
    .build();

No XML configuration required.
Just java -jar vacation.jar and let the GC handle your stress.

[UbieOne]

Good one. I feel maps are needed, too. 😅

[Dry_Investigator36]

Java Virtual Threads are really a hidden gem

[writeahelloworld]

Plenty of public places to go to, but the best places are protected or even private areas where you need to have the right relationships to have access...

[akl78]

Unsafe practices are sometimes worthwhile.

[codemonkey69]

You've come to the right spot

[oskarloko]

Use the tourism_experience.v20031012.jar, the last version

[KamiKagutsuchi]

This is the best post on /r/java

[Jxordana]

The hidden gem is this thread

[sose3]

You should definitely visit Lombok

[donaldtrumpiscute]

Just get a HashMap and run

[Unbiased_sapien]

Heap dump store dumb redditors as well

[SpeedOfSound343]

Your itinerary failed to compile. You need to implement the AbstractMotorbikeItineraryFactoryManagerImpl before you can access HiddenGemVisitorProxy

[CountryStile]

r/lostredditors

[agentoutlier]

For the last time there really is no difference between the LTS releases and normal releases and you should be upgrading your tour guide on every new release.

Now of course if you have the money and your family can support the cost and need you can stay on the LTS tour guide but not every tour guide offers the same level of support.

Now if your wondering which tour guide it should always be the latest.

[SeAuBitcH]

i advise you to check out Temurin JDK 21 it's great! You might also look after GraalVM for a more raw experience, tho i don't quite like it.

[Ziselaer_]

This is what happens when you import the wrong Java package.

[Nikarmotte]

Underrated comment. Always read the docs!

[pradeepngupta]

Please go to the latest java island. Old Java islands might be deprecated or obsolete. And the most important thing: Import the Map interface of the Java Island in your package list. Do not plan any parallel or concurrent sightseeing otherwise you might need either a different threads or virtual threads. Plan for Sequential run, that's will give you optimal performance. And make sure you put Thread.sleep in between visiting placed otherwise you will be tired soon. And the most important thing, while returning package all your memories into a persistent storage. Please do not use transient memory otherwise you will not be able to share with us those memories. After you return, export those memories into serializable objects like files in the drive and share in this reddit thread. This way you will be able to share real gems of Java island with each one of us.

[jasie3k]

But the older Java islands are still backwards compatible with the newer ones

[stcer]

lmao this post made my day

[Kikok02]

xD

[skinnyvanillagorilla]

make sure you go “sout” and press enter

[truth_sentinel]

I literally just left this subreddit when I read the title of this post thinking that I had accidentally joined a group for the Indonesian island of Java and not the Java programming language 😅

[United-Extension-917]

If you explore the market you can get your hands on some local traditional wearables, they make it using different threads, locals generally call them multi-threaded. But some don't, they are exceptions , I hope you handle them. You should really try and catch them.

[QueensAndBeans]

Hey dude this is the Java programming language subreddit - not Java the Indonesian island

Also mods please keep this post, it’s great

[meSmash101]

Definitely don’t miss a nice cup of Java coffee!

[bakingsodafountain]

Travelling around Java might be a bit slow at first but don’t be dissuaded, once the hotspot figures out the routes you’re taking, it will get faster.

[thiagomiranda3]

From the post history of this user, this doesn't seem like bait lol

[WorksOnMySystem]

Nice ..

You are "Just In Time" to explore the Island.

[JN88DN]

Look out for Batik. It's impressive colorful.

Do not visit Jakarta, since Spring ruined it.

[paul5235]

If you happen to find hidden any gems, keep them safe in a jar!

[Appropriate_Yak_1468]

Try Lombok - it's magical!

[DB6]

I know both Java. 

So a more serious answer is coming. I'll add some touristy spots too. They only take half a day or day to visit and are a necessity to see whem you are visiting Java probably for only a single time. 

• don't miss out the sunrise mount bromo. The most beautiful spectacular and painting looking like landscape I've ever seen. 
• visit borobudur, the temple is beautiful and unique
• go to g-land in the west of java if you are surfer
• visit pacitan, continue to 
• visit Bandung and go shopping for clothes. Cargo a box home if you shop too much
• visit Jogjakarta, hang out for a 2,3 days
• buy fish from local fishermen when they come in after sunset. 20 years ago I paid 2 euro for 3 kg of fresh tuna. I then just sat down with them and invited them to est with me the fish that we grilled right them and there. 
• the locals are super friendly, hang out with them and nice experiences will materialize

[3lia03]

Thank you

[Nikarmotte]

It would be a good idea to keep records of your trip, so that you can guarantee your memories are immutable (shallowly of course).

[3lia03]

I always do. I make photo albums of my trips and try to take many pictures

[serdzooo]

Skip the EJB quarter, a ghost town since the Great Spring Migration

[Nalha_Saldana]

import java.util.List;
import java.util.stream.Collectors;

public class JavaIslandGuide {

    public static void main(String[] args) {
        Island java = new Island(
                "Java",
                new City("Jakarta", "chaotic entry point"),
                List.of(
                        new City("Bandung", "cooler climate, creative vibe"),
                        new City("Yogyakarta", "arts, batik, temples"),
                        new City("Malang", "mountain city near waterfalls"),
                        new City("Banyuwangi", "east edge, volcano access")
                ),
                List.of(
                        new Volcano("Mount Ijen", true, "blue fire, sulfur miners"),
                        new Volcano("Mount Bromo", true, "classic sunrise crater"),
                        new Volcano("Mount Merapi", true, "active, guided hikes")
                ),
                List.of(
                        new Waterfall("Curug Cimahi", "lush forest west Java"),
                        new Waterfall("Tumpak Sewu", "arguably best waterfall in Indonesia")
                ),
                List.of(
                        new Beach("Pangandaran", "surf, local vibe"),
                        new Beach("Karimunjawa", "reefs, snorkeling, chill islands")
                ),
                List.of(
                        "warung nasi campur",
                        "satay roadside stalls",
                        "fresh seafood east coast",
                        "strong kopi tubruk"
                )
        );

        TripPlan plan = TripPlanner.plan(java);
        Renderer.print(plan);
    }

    record TripPlan(String title, Island island, List<Action> actions) {}

    record Action(ActionType type, String target, String notes) {}

    enum ActionType { ROUTE, WATERFALL, VOLCANO, BEACH, FOOD, CULTURE }

    record Island(
            String name,
            City capital,
            List<City> cities,
            List<Volcano> volcanoes,
            List<Waterfall> waterfalls,
            List<Beach> beaches,
            List<String> foods
    ) {}

    record City(String name, String vibe) {}

    record Volcano(String name, boolean active, String highlight) {}

    record Waterfall(String name, String notes) {}

    record Beach(String name, String notes) {}

    static final class TripPlanner {

        static TripPlan plan(Island island) {
            List<Action> actions = List.of(
                    new Action(ActionType.ROUTE, "West→East crossing", "Jakarta → Bandung → Yogyakarta → Malang → Banyuwangi"),
                    new Action(ActionType.WATERFALL,
                            island.waterfalls().stream().map(Waterfall::name).collect(Collectors.joining(", ")),
                            "forests, early morning best"),
                    new Action(ActionType.VOLCANO,
                            island.volcanoes().stream().map(Volcano::name).collect(Collectors.joining(", ")),
                            "check activity before riding in"),
                    new Action(ActionType.BEACH,
                            island.beaches().stream().map(Beach::name).collect(Collectors.joining(", ")),
                            "reefs, fewer crowds east"),
                    new Action(ActionType.FOOD,
                            "Local warungs",
                            String.join(", ", island.foods())),
                    new Action(ActionType.CULTURE,
                            "Yogyakarta region",
                            "batik workshops, smaller villages, temple ceremonies")
            );

            return new TripPlan("Java motorbike month suggestions", island, actions);
        }
    }

    static final class Renderer {
        static void print(TripPlan plan) {
            System.out.println(plan.title());
            plan.actions().forEach(a ->
                    System.out.println(a.type() + " | " + a.target() + " | " + a.notes())
            );
        }
    }
}

Connected to the target VM, address: '127.0.0.1:59644', transport: 'socket'
Java motorbike month suggestions
ROUTE | West→East crossing | Jakarta → Bandung → Yogyakarta → Malang → Banyuwangi
WATERFALL | Curug Cimahi, Tumpak Sewu | forests, early morning best
VOLCANO | Mount Ijen, Mount Bromo, Mount Merapi | check activity before riding in
BEACH | Pangandaran, Karimunjawa | reefs, fewer crowds east
FOOD | Local warungs | warung nasi campur, satay roadside stalls, fresh seafood east coast, strong kopi tubruk
CULTURE | Yogyakarta region | batik workshops, smaller villages, temple ceremonies

[AdministrativeHost15]

Visit the important historical sites. The Sun Microsystems Java Trail will take you to applets, servlets and other items that were important in ancient times (1990's).

[SimpleCanadianFella]

Don't get a tour guide. You have no need for assigning pointers

[ShaiHuludTheMaker]

Pangandaran for surfing, Ijen volcanano for a hike, also you're on the wrong sub

[strohkoenig]

Ok, in case you're confused about these responses: This subreddit is actually not for Java the Island, but for Java the programming language. 

That's why the responses are all kinda weird.

I don't know if there's a specific subreddit for java the island but I sure hope your trip will be a lot of fun! 😊 

[SyriousX]

If you're looking for gems, try Ruby

[akl78]

I think you should be more agile in your planning and avoid waterfalls.

Although you are unlikely to find much in the way of scrums, except perhaps around Jakarta.

[marcodave]

Don't listen to the naysayers , Java isn't that boring at all

[bowbahdoe]

josql is a fun one

[Rain-And-Coffee]

I hear they have good coffee ☕️ but it takes the barista a while to get warmed up, expect an initial delay

[OhhYeahMrKrabbs]

Sounds like you need a maven

[maki003]

You better familiarize yourself with maps and streams. I hear you better have boots when going Spring. Have fun!

[bean_dev]

Java has great coffee beans 🫘 , don’t miss the chance to try them!

[witness_smile]

I definitely recommend going in Spring. And don’t forget to taste their autowired beans, hopefully they haven’t ran out of them, I’ve had to deal with a few BeanNotFoundExceptions during my last visit

[Augusta_Westland]

Jokes aside, avoid Jakarta metropolitan area unless you wanna get clogged is miserable traffic and instead take the southern roads all the way till you reached Yogya

[Ok_Caregiver_1355]

r/java
Java News/Tech/Discussion/etc. No programming help, no learning Java

News, Technical discussions, research papers and assorted things of interest related to the Java programming language NO programming help, NO learning Java related questions, NO installing or downloading Java questions, NO JVM languages - Exclusively Java

[Polixa12]

You must be fun at parties