java class作为参数_如何在Java中传递一个类作为参数？

public void foo(Class c){ try { Object ob = c.newInstance(); } catch (InstantiationException ex) { Logger.getLogger(App.class.getName()).log(Level.SEVERE, null, ex); } catch (IllegalAccessException ex) { Logger.getLogger(App.class.getName()).log(Level.SEVERE, null, ex); } }

以下是Reflection API的一些很好的例子

如何使用reflection调用方法

import java.lang.reflect.*; public class method2 { public int add(int a, int b) { return a + b; } public static void main(String args[]) { try { Class cls = Class.forName("method2"); Class partypes[] = new Class[2]; partypes[0] = Integer.TYPE; partypes[1] = Integer.TYPE; Method meth = cls.getMethod( "add", partypes); method2 methobj = new method2(); Object arglist[] = new Object[2]; arglist[0] = new Integer(37); arglist[1] = new Integer(47); Object retobj = meth.invoke(methobj, arglist); Integer retval = (Integer)retobj; System.out.println(retval.i