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a simple java programming question

a simple java programming question# Java - 爪哇娇娃

w*t2003-04-14 07:04

1 楼

ok, I have a following bean class:
public class user {
String a1;
String a2;
....
String a20
setA1(){}
getA1(){}
...
setA20(){}
getA20(){}
}
I have a hashtable like following
key value

g*s2003-04-14 07:04

2 楼

java.lang.Class
java.lang.reflect.Method

【在 w******t 的大作中提到】

: ok, I have a following bean class:
: public class user {
: String a1;
: String a2;
: ....
: String a20
: setA1(){}
: getA1(){}
: ...
: setA20(){}

w*t2003-04-14 07:04

3 楼

show me how. Reflection is something I know. Thanks

【在 g*s 的大作中提到】

: java.lang.Class
: java.lang.reflect.Method

g*s2003-04-14 07:04

4 楼

Hashtable ht = ....;
user userObject = ....;
for (Enumeration e = ht.keys() ; e.hasMoreElements() ;) {
String key = (String)e.nextElement();
String value = (String)ht.get(key);
Object [] methodParamValues = new Object[1];
methodParamValues[0] = value;
Method method = userObject.getClass().getMethod("set"+key,
new Class [] { new String().getClass() });
method.invoke(userObject, methodParamValues);
}

【在 w******t 的大作中提到】

: show me how. Reflection is something I know. Thanks

w*t2003-04-14 07:04

5 楼

thanks.
It's not gong to work for my case though - in my real case, key and method
does not match that well. (key is string, it's from database table value, may
contain space)
I solved this issue other way.

【在 g*s 的大作中提到】

: Hashtable ht = ....;
: user userObject = ....;
: for (Enumeration e = ht.keys() ; e.hasMoreElements() ;) {
: String key = (String)e.nextElement();
: String value = (String)ht.get(key);
: Object [] methodParamValues = new Object[1];
: methodParamValues[0] = value;
: Method method = userObject.getClass().getMethod("set"+key,
: new Class [] { new String().getClass() });
: method.invoke(userObject, methodParamValues);