我用exe4j打包,在本机上没问题,但在其它机子上运行出现java.lang.NullPointerException at zhao.WebCamSwing.<init>(WebCamSwing.java:81) at zhao.start.main(start.java:10) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at com.exe4j.runtime.LauncherEngine.launch(Unknown Source) at com.exe4j.runtime.WinLauncher.main(Unknown Source) 这是什么原因,我用了其它库,也都加进去了
一个可执行的test.jar文件需要什么样的环境,应该装上虚拟机jre就行了吧?
望前辈指教!
at zhao.WebCamSwing.<init>(WebCamSwing.java:81)
at zhao.start.main(start.java:10)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at com.exe4j.runtime.LauncherEngine.launch(Unknown Source)
at com.exe4j.runtime.WinLauncher.main(Unknown Source)
这是什么原因,我用了其它库,也都加进去了