Java將父類所有的屬性COPY到子類中
public class FatherToChildUtils {
/*
* 將父類所有的屬性COPY到子類中。
* 類定義中child一定要extends father；
* 而且child和father一定為嚴格javabean寫法，屬性為deleteDate，方法為getDeleteDate
*/
public static void fatherToChild (Object father,Object child){
if(!(child.getClass().getSuperclass()==father.getClass())){
System.err.println("child不是father的子類");
}
Class fatherClass= father.getClass();
Field ff[]= fatherClass.getDeclaredFields();
for(int i=0;i<ff.length;i++){
Field f=ff[i];//取出每一個屬性，如deleteDate
Class type=f.getType();
try {
Method m = fatherClass.getMethod("get"+upperHeadChar(f.getName()));//方法getDeleteDate
Object obj=m.invoke(father);//取出屬性值
f.set(child,obj);
} catch (SecurityException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IllegalArgumentException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (NoSuchMethodException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IllegalAccessException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (InvocationTargetException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
/**
* 首字母大寫，in:deleteDate，out:DeleteDate
*/
private static String upperHeadChar(String in){
String head=in.substring(0,1);
String out=head.toUpperCase()+in.substring(1,in.length());
return out;
}
}
