Linux作业管理

import java.lang.reflect.Field;
import java.lang.reflect.Method;

public class Test
{

/**
* @param args
*/
public static void main(String[] args)
{
User user1 = new User();
User user2 = new User();
user2.setAge(222);
user2.setNum(333);
user2.setUserName("222Name");
User user = (User) replaceValue(user1, user2);
System.out.println(user.toString());

}

public static String generateSetName(String fieldName) {
if (null == fieldName || "".equals(fieldName)) {
return null;
}
return "set" + fieldName.substring(0, 1).toUpperCase()
+ fieldName.substring(1);
}

private static Object replaceValue(Object newObject, Object oldObject)
{
try
{
Field[] incrementFields = newObject.getClass().getDeclaredFields();
Field[] oldFields = oldObject.getClass().getDeclaredFields();
for (int i = 0; i < incrementFields.length; i++)
{
Field incrementField = incrementFields[i];
incrementField.setAccessible(true);
for (int j = 0; j < oldFields.length; j++)
{
Field field = incrementFields[j];
field.setAccessible(true);
if (incrementField.getName().equals(field.getName()))
{
if(incrementField.get(newObject) != null)
{
Method fieldSetMet = newObject.getClass()
.getMethod(generateSetName(incrementField.getName()), incrementField.getType());
fieldSetMet.invoke(oldObject, incrementField.get(newObject));
}

}
}
}
} catch (Exception ex)
{
ex.printStackTrace();
}
return oldObject;

}

}