有关反射中Method的问题 - 黑马程序员技术交流社区

import java.lang.reflect.Method;
public class InvokeTester
{
public int add(int param1,int param2)
{
return param1+param2 ;
}
public String echo(String message)
{
return "hello "+message;
}
public static void main(String[] args) throws Exception
{
// InvokeTester a = new InvokeTester();
//
// System.out.println(a.add(2, 3));
Class<?> classType = InvokeTester.class;
Object invokeTester = classType.newInstance();
// System.out.println(invokeTester instanceof InvokeTester);
Method addMethod = classType.getMethod("add",new Class[]{Integer.TYPE,Integer.TYPE});
Object result = addMethod.invoke(invokeTester, new Object[]{1,2});
System.out.println((Integer)result);
System.out.println("-------------------------------------------------------");
Method echoMethod = classType.getMethod("echo", new Class[]{String.class});
Object result2 = echoMethod .invoke(invokeTester, new Object[]{"tom"});
System.out.println((String)result2);
}
}

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