首先Method类代表一个方法，所以invoke（调用）就是调用Method类代表的方法。它可以让你实现动态调用，例如你可以动态的传人参数。下面是一个简单的例子。
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public class MethodTest{ public static void main(String[] args) { String [] names ={"tom","tim","allen","alice"}; Class<?> clazz = Test.class; try { Method method = clazz.getMethod("sayHi", String.class); for(String name:names) method.invoke(clazz.newInstance(),name); } catch (NoSuchMethodException e) { e.printStackTrace(); } catch (IllegalAccessException e) { e.printStackTrace(); } catch (IllegalArgumentException e) { e.printStackTrace(); } catch (InvocationTargetException e) { e.printStackTrace(); } catch (InstantiationException e) { e.printStackTrace(); } }}class Test{ public void sayHi(String name) { System.out.println("Hi "+name); }} |
