这是我使用的代码:
File urlclasspath = new File("C:/Users/ASUS/Desktop/semantics/semantics/bin");
URL urlarray[] = new URL[1];
urlarray[0] = urlclasspath.toURI().toURL();
MyClassLoader mycl = new MyClassLoader(urlarray);
Class myclass = mycl.loadClass("USAGE");
Object obj = myclass.newInstance();
我正在加载的课程是 USAGE ,我要调用的方法是 main(String [] args)
答案 0 :(得分:3)
您无需致电newInstance()
。这样做:
Class<?> myclass = mycl.loadClass("USAGE"); // get the class
Method m = myclass.getMethod("main", String[].class); // get the method you want to call
String[] args = new String[0]; // the arguments. Change this if you want to pass different args
m.invoke(null, args); // invoke the method