Java内容重新整理删除过期的东西

Java/JavaDemo/codedemo/java/lang/reflect/InvokeMethod.java

@@ -0,0 +1,84 @@
+package cn.aofeng.demo.java.lang.reflect;
+
+import java.lang.reflect.InvocationTargetException;
+import java.lang.reflect.Method;
+
+import static cn.aofeng.demo.util.LogUtil.log;
+
+/**
+ * 通过反射调用方法。
+ * 
+ * @author <a href="mailto:aofengblog@163.com">聂勇</a>
+ */
+public class InvokeMethod {
+
+    /**
+     * 调用父类的方法。
+     * 
+     * @param claz
+     *            类
+     * @param man
+     *            类对应的实例
+     */
+    private static void invokeParentMethod(Class<Man> claz, Man man)
+            throws NoSuchMethodException, IllegalAccessException,
+            InvocationTargetException {
+        // 调用父类的public方法
+        Method method = claz.getMethod("setName", String.class);
+        method.invoke(man, "NieYong");
+        log(man.toString());
+
+        method = claz.getMethod("getName");
+        Object result = method.invoke(man);
+        log("name:%s", result);
+
+        // 调用父类的private方法
+        method = claz.getSuperclass().getDeclaredMethod("reset");
+        method.setAccessible(true);
+        result = method.invoke(man);
+        log(man.toString());
+    }
+
+    /**
+     * 调用自身的方法。
+     * 
+     * @param claz
+     *            类
+     * @param man
+     *            类对应的实例
+     */
+    private static void invokeSelfMethod(Class<Man> claz, Man man)
+            throws NoSuchMethodException, IllegalAccessException,
+            InvocationTargetException {
+        man.setName("XiaoMing");
+        // 调用自身的private方法
+        Method method = claz.getDeclaredMethod("setPower", int.class);
+        method.setAccessible(true);
+        method.invoke(man, 99);
+        log("power:%d", man.getPower());
+
+        // 调用自身的public方法
+        log("%s is marry:%s", man.getName(), (man.isMarry() ? "Yes" : "No"));
+        method = claz.getDeclaredMethod("setMarry", boolean.class);
+        method.invoke(man, true);
+        log("%s is marry:%s", man.getName(), (man.isMarry() ? "Yes" : "No"));
+
+        // 调用静态方法，可将实例设置为null，因为静态方法属于类
+        Man a = new Man("张三");
+        Man b = new Man("李四");
+        method = claz.getMethod("fight", Man.class, Man.class);
+        method.invoke(null, a, b); //
+    }
+
+    public static void main(String[] args) throws NoSuchMethodException,
+            SecurityException, IllegalAccessException,
+            IllegalArgumentException, InvocationTargetException,
+            InstantiationException {
+        Class<Man> claz = Man.class;
+        Man man = claz.newInstance();
+
+        invokeParentMethod(claz, man);
+        invokeSelfMethod(claz, man);
+    }
+
+}