预验证:错误:使用netbeans 6.9在j2me中运行代码时，不应显示浮点常量

Question

我在J2ME-Polish2.1.4中创建了一个新项目，当我使用J2ME-Polish2.1.4创建一个新项目时，构建是成功的，但是当我运行这段代码时，我看到了关于浮点常量的错误，下面有更多详细信息。

如何从这个问题中恢复？

`J2ME Polish 2.1.4 (2010-01-18) (GPL License)
Loading device database...
Last build was interrupted or failed, now clearing work directory...
using locale [en_US]...
assembling resources for device [Nokia/7610].
preprocessing for device [Nokia/7610].
processing locale code... 
compiling for device [Nokia/7610].
warning: 'includeantruntime' was not set, defaulting to build.sysclasspath=last; set to false for repeatable builds
Compiling 428 source files to D:\Faraz\development\J2ME-Polish-Projectaaaa\build\test\Nokia\7610\en_US\classes
preverifying for device [Nokia/7610].
preverify:ERROR: floating-point constants should not appear
preverify:Error preverifying class de.enough.polish.ui.screenanimations.CubeScreenChangeAnimation
Preverify call failed: 1
C:\WTK2.5.1\bin\preverify.exe -classpath d:\J2ME-Polish2.1.4\import\mmapi.jar;d:\J2ME-Polish2.1.4\import\cldc-1.0.jar;d:\J2ME-Polish2.1.4\import\midp-2.0.jar;d:\J2ME-Polish2.1.4\import\nokia-ui.jar;d:\J2ME-Polish2.1.4\import\wmapi-2.0.jar;d:\J2ME-Polish2.1.4\import\wmapi.jar;d:\J2ME-Polish2.1.4\import\btapi.jar;d:\J2ME-Polish2.1.4\import\m3g.jar;d:\J2ME-Polish2.1.4\import\jsr172.jar;d:\J2ME-Polish2.1.4\import\fileconnection.jar;d:\J2ME-Polish2.1.4\import\pim.jar;d:\J2ME-Polish2.1.4\import\m2g.jar -d D:\Faraz\development\J2ME-Polish-Projectaaaa\build\test\Nokia\7610\en_US\classes -nofp -nofinalize -nonative D:\Faraz\development\J2ME-Polish-Projectaaaa\build\test\Nokia\7610\en_US\classes 
D:\Faraz\development\J2ME-Polish-Projectaaaa\build.xml:87: Unable to preverify for device [Nokia/7610] - preverify returned result 1
BUILD FAILED (total time: 9 seconds) 
`

Answer 1

如果您更深入地研究首选类路径，就会发现导致错误的原因。

C:\WTK2.5.1\bin\preverify.exe -classpath d:\J2ME-Polish2.1.4\import\mmapi.jar;d:\J2ME-Polish2.1.4\import\cldc-1.0.jar;d:\J2ME-Polish2.1.4\import\midp-2.0.jar;d:\J2ME-Polish2.1.4\import\nokia-ui.jar;d:\J2ME-Polish2.1.4\import\wmapi-2.0.jar;d:\J2ME-Polish2.1.4\import\wmapi.jar;d:\J2ME-Polish2.1.4\import\btapi.jar;d:\J2ME-Polish2.1.4\import\m3g.jar;d:\J2ME-Polish2.1.4\import\jsr172.jar;d:\J2ME-Polish2.1.4\import\fileconnection.jar;d:\J2ME-Polish2.1.4\import\pim.jar;d:\J2ME-Polish2.1.4\import\m2g.jar -d D:\Faraz\development\J2ME-Polish-Projectaaaa\build\test\Nokia\7610\en_US\classes -nofp -nofinalize -nonative D:\Faraz\development\J2ME-Polish-Projectaaaa\build\test\Nokia\7610\en_US\classes 

上面提到的cldc-1.0.jar意味着你的构建是为CLDC1.0配置的，实际上不支持浮点。这就是你的构建失败的原因。

要解决这个问题，要么在应用程序中去掉浮点代码，要么使用允许浮点和双精度的CLDC 1.1。