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最近在用repast s 建模做供应链管理的问题，对于repast s 中网络结构的使用很不了解
! C* g3 g* w) \1 f7 ]写完代码之后编译出现错误，应该是显示方面的错误，我实在弄不懂# J' k0 U* G- i4 O ?6 j: T A! o, J
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有没有哪位牛人帮我看看错误，或者给我个适用network结构的demo让我学习下
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' Q! z6 z+ B3 z N" ^) M感谢感谢, D) `# }$ R5 g
错误如下：( P' C. a+ S D9 k- y+ e& k, H
8 h) O& C/ j2 ZException in thread "Thread-4" javax.media.opengl.GLException: java.lang.NullPointerException- m1 [7 C& ^, o! X
at javax.media.opengl.Threading.invokeOnOpenGLThread(Threading.java:271) J2 @1 \; Z* {; n
at javax.media.opengl.GLCanvas.maybeDoSingleThreadedWorkaround(GLCanvas.java:410)
' Q: j3 A6 A, i& D at javax.media.opengl.GLCanvas.display(GLCanvas.java:244)6 H9 \7 O# S5 n
at saf.v3d.Canvas2D.update(Canvas2D.java:113)
4 O( l2 b# W* R7 N2 J at repast.simphony.visualizationOGL2D.DisplayOGL2D.setPause(DisplayOGL2D.java:358)
& b# s) X" H& |) { at repast.simphony.render.RendererManager.setPause(RendererManager.java:57)1 c: C% Y- \% ?6 v
at repast.simphony.ui.GUIScheduleRunner$ScheduleLoopRunnable.run(GUIScheduleRunner.java:46)
6 [# \( @( I: ^, X% t at java.lang.Thread.run(Unknown Source)
; [; ?. ~5 h# i, A6 [Caused by: java.lang.NullPointerException
% w- r; f/ {& g; f# i; I) \ at saf.v3d.scene.VEdge2D.doGetBoundingSphere(VEdge2D.java:130)
r" a8 |! v0 O6 j e3 Y at saf.v3d.scene.VComposite.doGetBoundingSphere(VComposite.java:88)
3 ~6 g9 V) z I) M6 R at saf.v3d.scene.VComposite.doGetBoundingSphere(VComposite.java:88)
~" q) e" k* e6 W# m) L8 v# K at saf.v3d.scene.VRoot.doGetBoundingSphere(VRoot.java:56)9 `' d9 Q' _. [& w0 f
at saf.v3d.scene.VSpatial.getBoundingSphere(VSpatial.java:439)
% F; j8 Z1 n8 i! B at saf.v3d.scene.Camera.resetAndCenter(Camera.java:58). B! p7 C/ w" n4 Z
at saf.v3d.Canvas2D.centerScene(Canvas2D.java:273), v& m6 k1 |9 L) d- U
at saf.v3d.Canvas2D.reshape(Canvas2D.java:302)
% O# N, l: G% F4 B( z. ^ at com.sun.opengl.impl.GLDrawableHelper.reshape(GLDrawableHelper.java:85)" U& s4 H" k N; O1 H; u* c
at javax.media.opengl.GLCanvas$DisplayAction.run(GLCanvas.java:431)
6 M; j- x+ w2 G( P at com.sun.opengl.impl.GLDrawableHelper.invokeGL(GLDrawableHelper.java:194)* R8 g9 Y" Z) j5 j8 A
at javax.media.opengl.GLCanvas$DisplayOnEventDispatchThreadAction.run(GLCanvas.java:452)
* Z! o& N( x% B3 o. D( K at java.awt.event.InvocationEvent.dispatch(Unknown Source)/ R7 f8 L+ |- z2 c1 N( ?
at java.awt.EventQueue.dispatchEvent(Unknown Source), B4 x0 m4 b6 J& z; w/ s
at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source): @* |( r1 i" p! B! A5 z/ I" J {
at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)4 L9 B) W: X: j
at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)0 j2 i2 v: Z: p# `" M
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)# p( S1 R: C( p; P8 f; ]' {5 D
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)9 y ^- h. F, @) |
at java.awt.EventDispatchThread.run(Unknown Source) |
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发表于 2011-8-14 15:50:58
