Thanks all for the reply, You were right...I did the change and it worked.
And also, SelectOption is not wicket one but a class created by me only:
package WalknShine;
import java.io.Serializable;
public class SelectOption implements Serializable{
/**
*
*/
private static final long serialVersionUID = 1L;
private int key;
private String value;
public SelectOption(int key, String value) {
this.key = key;
this.value = value;
}
getters and setters...
}
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