这是问题的简化版本:的Java铸造/类加载器发出
SomeClass c = (SomeClass) obj.getSomeClassParent()
并不总是,但有时会发生触发例外
org.somepackage.SomeClass can't be cast to org.somepackage.SomeClass
这怎么可能?我想这与JAI imageio是原生lib这个事实有关,但转发这种情况怎么会发生?我可能错过了什么,但是什么?
I'm using JAI imageio version 1.1
dcm4che 2.0.21 DICOM lib
这里是原代码
ImageInputStream iis = ImageIO.createImageInputStream(src);
Iterator<ImageReader> iter = ImageIO.getImageReadersByFormatName("DICOM");
ImageReader reader = iter.next();
DicomImageReadParam param = (DicomImageReadParam) reader.getDefaultReadParam();
而原来的异常
org.dcm4che2.imageio.plugins.dcm.DicomImageReadParam can't be cast to
org.dcm4che2.imageio.plugins.dcm.DicomImageReadParam
Exception Image http://img215.imageshack.us/img215/3894/exception.jpg
可能的重复:http://stackoverflow.com/questions/826319/classcastexception-when-casting-to-the-same-class – 2010-01-08 18:36:21