In J2ME and Android which one is more useful, usea

2020-05-23 17:52发布

I am very interested in mobile application development. But which language or framework is more popular, useful and usable?

I know Java well. If you have any idea and/or experience, please help me to take my decision.

12条回答
Melony?
2楼-- · 2020-05-23 18:21

J2ME is the most popular. Because many mobile phones have a support for J2ME. J2ME's main advantage is that it belongs to the Java family, it is open source and widely supported by various kinds of devices.

Many mobile phones and other devices support J2ME due to its simplicity, easy to implement, etc. The J2ME is the base for Blackberry,Android,etc.Because the others (other than J2ME) are developed after the J2ME.After eliminating the tough concepts in j2me,using some j2me concepts they build their environment like android,blackberry,etc.
J2ME is very old .It have many drawbacks,limitations,etc.
These drawbacks are overcomed in the latest technology like android,blackberry,etc.

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3楼-- · 2020-05-23 18:25


J2me is good .It is old.It have many disadvantages,etc
Android overcome that disadvantages.Android keep on growing
The general java feature "platform independent" is failed sometimes,some scenarios in J2ME.
Android is new technology.It have many features,etc than J2ME.
Developing an application for android devices is simple,easy,etc.
We need ot get the pay liscence for developing application and deploying (applications) into the device.
The android SDK is obtained by free versions.
My opinion is Android is better than J2ME.

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趁早两清
4楼-- · 2020-05-23 18:30

J2ME is very popular because almost every phone can run these applications.

Android on the other side has just few phones and netbooks supported, but Android API/SDK is more powerful than J2ME. Android phones come with great hardware and you'll have the opportunity to work with all these "cool" touch screens, gps, accelerometers, etc. It's still in development, but I think it has a future.

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走好不送
5楼-- · 2020-05-23 18:32

Only Android Can Catch the iPhone

There are something like 20 Android phones coming out before the end of the year.(*)

Networks like Verizon that ship only deliberately-crippled handsets will be hard-pressed to win sophisticated consumers. Their customers mostly make voice calls and text each other, to get fancy they might run Song ID or VZ Navigator.

I think the issue is: which phone owners actually d/l and use the apps? The walled-off Verizon customers, not so much. Right now, the action is in the iPhone, but I think Android might catch up.

(*) Here is just one.

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萌系小妹纸
6楼-- · 2020-05-23 18:34

I have to agree with others on shying away from J2ME development. I have a Motorola RAZR V3xx that I've used for a few years. It is as standard a J2ME-supporting phone as you're likely to get from most carriers. I decided to look into doing some J2ME development for the phone to give myself some helpful utilities.

Long story short, there is a reason you pretty much only see games on J2ME phones. Unless you are willing/able to shell out big bucks for signing certificates, you cannot even access the most useful APIs available on the phone. Things like File IO, PIM (contacts, calendar), Bluetooth, etc. are simply blocked unless you get your application signed using a carrier's (AT&T, T-Mobile, Sprint, Verizon, etc.) special certificate. And the cost of these certificates can easily exceed hundreds or thousands of dollars. Putting this simply out of the range of your average hobbyist.

I could go on, but a couple of sites have covered this topic in much greater detail Here and Here.

For me, this pretty much means I will be targeting the Android in the future. The iPhone is also a good place to be targeting. The current state of J2ME on handsets here in the U.S. is just not worth my time for pet projects. Which is disappointing, as most of these phones are capable of doing many useful things otherwise.

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神经病院院长
7楼-- · 2020-05-23 18:35

It depends on what you mean by 'popular'. If you are counting in terms of installed handsets, then J2ME wins hands down. As far as current installed handsets, Android has few mobile phone companies and only recent mobile phones (whereas J2ME has been around for the last six odd years).

However, that doesn't make working with J2ME a nice-to-have. Sadly, each manufacturer cripples it in some way, and not all phones with the J2ME badge are equal; some are more equal than others. MIDP, MIDP2.0, CLDC, CDC ... the list of acronyms goes on. And when you buy a phone, it has 'Java enabled' without actually saying what it is that it supports, so even the customer doesn't have a clue.

Despite its large installed base, J2ME remains fundamentally unpowered for the world's current generation of mobile phones; the upgrade path is usually non-existent (though it's the manufacturers to blame for that, unfortunately) and you can't even do things like access Bluetooth or contacts in any useful way; though extensions have been proposed for J2ME, they've never really lived up to the expectation of write-once-run-anywhere.

Whether Android goes down this route as well remains to be seen - the biggest concern is manufacturers are trying to 'do their own thing' (e.g. Motorolla's BLUR UI) which will further fragment the market.

Lastly, don't forget that it's in the handset manufacturer's interests for you to throw away your old phone and buy a new one every year (or two). Support, bug-fixes, and generally upgrading your old phone's software, though technically feasible, never happens. I had a P990, and despite a few rounds of updates, it remained as buggy as hell (which is why I ditched it for the iPhone when it came out).

So, from a programming perspective, Android is better than J2ME. For reaching many handsets, J2ME is better than Android. For general user interface and power, choose an iPhone.

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