Question

在我安装和配置MCR 8.3的Ubuntu机器上执行Matlab，我有这样的错误：

The class "internal.optim" is undefined.
Perhaps Java is not running.

Error in internal.optim.presolve (line 211)
Error in ipqpcommon (line 30)
Error in quadprog (line 353)
Error in mv_low_level_solver_quadprog (line 72)
Error in mv_optim_min_risk (line 47)
Error in Portfolio/estimateFrontierLimits (line 79)
Error in portafoglio (line 63)

... Matlab M-code Stack Trace ...
file /home/zuno/.mcrCache8.3/Portaf0/toolbox/optim/optim/+internal/+optim/presolve.p, name presolve, line 211.
file /home/zuno/.mcrCache8.3/Portaf0/toolbox/optim/optim/private/ipqpcommon.p, name ipqpcommon, line 30.
file /home/zuno/.mcrCache8.3/Portaf0/toolbox/optim/optim/quadprog.m, name quadprog, line 353.
file /home/zuno/.mcrCache8.3/Portaf0/toolbox/finance/finance/@Portfolio/private/mv_low_level_solver_quadprog.p, name mv_low_level_solver_quadprog, line 72.
file /home/zuno/.mcrCache8.3/Portaf0/toolbox/finance/finance/@Portfolio/private/mv_optim_min_risk.p, name mv_optim_min_risk, line 47.
file /home/zuno/.mcrCache8.3/Portaf0/toolbox/finance/finance/@Portfolio/estimateFrontierLimits.m, name estimateFrontierLimits, line 79.
file /home/zuno/.mcrCache8.3/Portaf0/PortafoglioB/portafoglio.m, name portafoglio, line 63.
com.mathworks.toolbox.javabuilder.MWException: The class "internal.optim" is undefined.
Perhaps Java is not running.
    at com.mathworks.toolbox.javabuilder.internal.MWMCR.mclFeval(Native Method)
    at com.mathworks.toolbox.javabuilder.internal.MWMCR.access$600(MWMCR.java:23)
    at com.mathworks.toolbox.javabuilder.internal.MWMCR$6.mclFeval(MWMCR.java:833)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:606)
    at com.mathworks.toolbox.javabuilder.internal.MWMCR$5.invoke(MWMCR.java:731)
    at com.sun.proxy.$Proxy39.mclFeval(Unknown Source)
    at com.mathworks.toolbox.javabuilder.internal.MWMCR.invoke(MWMCR.java:406)

显然Java正在运行，如果我尝试执行其他Matlab函数，我没有问题。可能是什么问题？

更新如果我在Windows上使用相同的MCR执行相同的代码......它可以工作......

Answer 1

我很确定它是在Windows上编译的。从v83开始，包含已转换库的生成的jar还包含一个.ctf文件，该文件类似于包含Windows DLL的包。要解决这个问题，你应该重新编译你的jar（我知道这听起来很奇怪，因为java的座右铭是一次运行，但是......这不是一个java问题），而且是64位的linux。

干杯， VD

Matlab MCR缺少内部类

1 个答案: