当我尝试在运行时动态加载一个类,并且该类是在一个不是默认包的包中编译时,我有一个 ClassNotFound 异常。
示例:包名称:“型号”。类名:“Cup.class”。这是我的代码:
File file = new File(fileName);
URL url;
URL[] urls;
String name = file.getName().substring(0, file.getName().length()-6);
file = new File(file.getAbsolutePath().replaceAll(file.getName(), ""));
System.out.println(name);
// Convert File to a URL
url = file.toURL();
urls = new URL[]{url};
ClassLoader cl = new URLClassLoader(urls);
Class cls = cl.loadClass(name);
Shape temp = (Shape) cls.newInstance();
ShapeFactory.getInstance().registerShape(temp);