Java内容重新整理删除过期的东西

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

@@ -0,0 +1,37 @@
+package cn.aofeng.demo.java.lang.reflect;
+
+import java.lang.reflect.Field;
+
+import static cn.aofeng.demo.util.LogUtil.log;
+
+/**
+ * 通过反射设置字段。
+ * 
+ * @author <a href="mailto:aofengblog@163.com">聂勇</a>
+ */
+public class InvokeField {
+
+    public static void main(String[] args) throws NoSuchFieldException,
+            SecurityException, IllegalArgumentException, IllegalAccessException {
+        Man man = new Man();
+        Class<?> claz = man.getClass();
+        
+        log("==========设置public字段的值==========");
+        log("height的值:%d", man.height);
+        Field field = claz.getField("height");
+        field.setInt(man, 175);
+        log("height的值:%d", man.height);
+        
+        log("==========设置private字段的值==========");
+        log("power的值:%d", man.getPower());
+        field = claz.getDeclaredField("power");
+        field.setAccessible(true);
+        field.setInt(man, 100);
+        log("power的值:%d", man.getPower());
+        
+        log("==========获取private字段的值==========");
+        int power = field.getInt(man);
+        log("power的值:%d", power);
+    }
+
+}