java利用反射执行对象的方法

import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;

public class ClassUtil {
    /**
     * 通过反射执行srcClass的方法
     * @param object   --- the object the underlying method is invoked from
     * @param srcClass  ---要执行的类class
     * @param paramClasses  --- 参数class数组
     * @param methodName  ---方法名称
     * @param args   ---the arguments used for the method call
     * @return
     * @throws SecurityException
     * @throws NoSuchMethodException
     * @throws IllegalAccessException
     * @throws IllegalArgumentException
     * @throws InvocationTargetException
     */
    public static Object executeObjectMethod(Object object, Class srcClass, Class[] paramClasses, String methodName,  Object... args) throws SecurityException, NoSuchMethodException, IllegalAccessException, IllegalArgumentException, InvocationTargetException {
        Method method = srcClass.getMethod(methodName, paramClasses);
        return method.invoke(object, args);
    }

    public static void main(String[] args) throws Exception {
        //通过反射执行Integer的toHexString静态方法
        //System.out.println(Integer.toHexString(233));
        System.out.println(ClassUtil.executeObjectMethod(null, Integer.class, new Class[]{int.class}, "toHexString", 233 ));
        String value = new String("test");
        //执行String对象的length()方法
        System.out.println(executeObjectMethod(value, value.getClass(), null, "length"));
    }

}