我在 NetBeans 中创建了很多 J2ME 应用程序。现在我想创造
Eclipse 中的 J2ME 应用程序而不是 NetBeans。
所以我是 Eclipse 的新手，我已经在 Eclipse 3.7.2 Indigo 中安装了 MTJ 插件
以及 J2ME 无线设备工具包。
我可以创建应用程序然后运行，但是当我使用 LWUIT.jar 和
制作简单的 Hello world 项目然后我无法创建它。
当我选择编译器级别时(Java 中的编译器提示级别
编译器)到 1.3 然后我得到了一个异常(exception)，比如，
Running with storage root DefaultColorPhone
java.lang.NoClassDefFoundError: com/sun/lwuit/Display
at HelloMidlet.startApp(+1)
at javax.microedition.midlet.MIDletProxy.startApp(+7)
at com.sun.midp.midlet.Scheduler.schedule(+270)
at com.sun.midp.main.Main.runLocalClass(+28)
at com.sun.midp.main.Main.main(+116)
Execution completed.
709909 bytecodes executed
4 thread switches
742 classes in the system (including system classes)
3658 dynamic objects allocated (101416 bytes)
2 garbage collections (87640 bytes collected)
当我将其他编译器级别设置为 1.4、1.5、1.6 或 1.7 等其他级别时，我
有一个异常(exception)，例如，
Running with storage root DefaultColorPhone
Method............: 1016db58 'com/sun/midp/midlet/MIDletState.createMIDlet
(static)'
Stack Chunk.......: 194b53c
Frame Pointer.....: 194b5e0
Current IP........: 101f1715 = 101f1707 + offset 14
Previous Frame....: 194b5a8
Previous IP.......: 101d42d4 (offset 52)
Frame size........: 7 (1 arguments, 6 local variables)
Argument[0].......: 194a0d4
Local[1]..........: 194b5a8
Local[2]..........: 101d42d1
Local[3]..........: 194a578
Local[4]..........: 1016d950
Local[5]..........: 194b53c
Local[6]..........: 0
Operand[1]........: 194a0d4
Method............: 1015a558 'com/sun/midp/midlet/Scheduler.schedule
(virtual)'
Stack Chunk.......: 194b53c
Frame Pointer.....: 194b5a8
Current IP........: 101d42d4 = 101d42a0 + offset 52
Previous Frame....: 194b574
Previous IP.......: 101dec85 (offset 28)
Frame size........: 7 (2 arguments, 5 local variables)
Argument[0].......: 194a738
Argument[1].......: 1937b98
Local[2]..........: 194a0d4
Local[3]..........: 194b574
Local[4]..........: 101dec81
Local[5]..........: 194b588
Local[6]..........: 1015a478
Operand[1]........: 194a738
Method............: 1016224c 'com/sun/midp/main/Main.runLocalClass (static)'
Stack Chunk.......: 194b53c
Frame Pointer.....: 194b574
Current IP........: 101dec85 = 101dec69 + offset 28
Previous Frame....: 194b550
Previous IP.......: 101de6fc (offset 116)
Frame size........: 3 (1 arguments, 2 local variables)
Argument[0].......: 194ad1c
Local[1]..........: 1937b98
Local[2]..........: 194b550
Method............: 101621ac 'com/sun/midp/main/Main.main (static)'
Stack Chunk.......: 194b53c
Frame Pointer.....: 194b550
Current IP........: 101de6fc = 101de688 + offset 116
Previous Frame....: 0
Previous IP.......: 1
Frame size........: 3 (1 arguments, 2 local variables)
Argument[0].......: 194b828
Local[1]..........: 194ad1c
Local[2]..........: 194a114
VM status:
Instruction pointer.: 101f1715 (offset within invoking method: 14)
Next instruction....: 0x4c
Frame pointer.......: 194b5e0
Local pointer.......: 194b5c4
Stack size..........: 256; sp: 194b5f8; ranges: 194b544-194b744;194b270-
194b470;
Contents of the current stack frame:
194b5c4: 194a0d4 (lp)
194b5c8: 194b5a8
194b5cc: 101d42d1
194b5d0: 194a578
194b5d4: 1016d950
194b5d8: 194b53c
194b5dc: 0
194b5e0: 194b5a8 (fp)
194b5e4: 101d42d4
194b5e8: 194b5c0
194b5ec: 1016db58
194b5f0: 194b53c
194b5f4: 0 (end of frame)
194b5f8: 194a0d4 (sp)
Execution stack contains 184 items:
194b828
194ad1c
194a114
0
1
194b540
101621ac
194b53c
0
194ad1c
1937b98
194b550
194b550
101de6fc
194b564
1016224c
194b53c
0
194a738
1937b98
194a0d4
194b574
101dec81
194b588
1015a478
194b574
101dec85
194b588
1015a558
194b53c
0
194a738
194a0d4
194b5a8
101d42d1
194a578
1016d950
194b53c
0
194b5a8
101d42d4
194b5c0
1016db58
194b53c
0
194a0d4
Execution completed.
707559 bytecodes executed
4 thread switches
740 classes in the system (including system classes)
3583 dynamic objects allocated (99164 bytes)
1 garbage collections (0 bytes collected)
Execution completed.
707559 bytecodes executed
4 thread switches
740 classes in the system (including system classes)
3583 dynamic objects allocated (99164 bytes)
1 garbage collections (0 bytes collected)
ALERT: java/lang/ClassFormatError: Bad version information.
如果您对此有任何想法，请帮助我.. 提前致谢。
最佳答案
保持项目编译器级别为 1.3。
从 http://www.oracle.com/technetwork/java/javame/javamobile/download/lwuit/index.html 下载 Lwuit 1.5 版
在 lib 文件夹中，您可以找到 LWUIT_MIDP.jar 确保您使用此文件。
更新
NoClassDefFoundError: com/sun/lwuit/Display 可能是由于 LWUIT jar 没有被标记为导出的库造成的。
查看项目属性 .. Java 构建路径 .. 订单和导出。
必须标记 LWUIT_MIDP.jar。
关于eclipse - 带有 LWUIT 的 Eclipse 中的 J2ME - 出现异常，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/14728275/