No default constructor error on inner bean

[dble]

Hello

the following error occurs when initiating a bean with inner beans which contain other inner beans. I have not found any documentation if this is impossible there for it semms strange to me.

No default constructor found; nested exception is java.lang.NoSuchMethodException: de.sf.faps.ui.menu.NavigationMenuItem$MenuRight.<init>()

The class is:

public class NavigationMenuItem extends NavigationItem implements Serializable {

  public NavigationMenuItem() {
    super();
    this.flowId = "";
    this.oncomplete = "";
    this.onsubmit = "";
    this.enabled = true;
  }
  
  public NavigationMenuItem(NavigationMenuItem argOriginal) {
    super(argOriginal);
    this.parentId = argOriginal.getParentId();
    this.flowId = argOriginal.getFlowId();
    this.position = argOriginal.getPosition();
    this.activeDependsOn = argOriginal.getActiveDependsOn();
    this.functionGroup = argOriginal.getFunctionGroup();
    this.oncomplete = argOriginal.getOncomplete();
    this.onsubmit = argOriginal.getOnsubmit();
    this.enabled = argOriginal.isEnabled();
    this.accessRights = argOriginal.getAccessRights();
  }
  
  // followed by setters and getters
  
  public class MenuRight implements Serializable {
  
      private static final long serialVersionUID = 9144699483642271332L;
  
      private String right = null;
      
      private Class<?> type = null;
  
      public MenuRight() {
        super();
      }
  
      public MenuRight(String argRight) {
        this.right = argRight;
      }
  
  
      public String getRigth() {
        return right;
      }
  
      public Class<?> getType() {
        return type;
      }
  
      public void setRigth(String rigth) {
        this.right = rigth;
      }
  
      public void setType(Class<?> argType) {
        this.type = argType;
      }
  }
}

As you can see the default constructor is implemented.
The xml is:

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns:context="http://www.springframework.org/schema/context"
       xsi:schemaLocation="
           http://www.springframework.org/schema/beans
           http://www.springframework.org/schema/beans/spring-beans-2.5.xsd
           http://www.springframework.org/schema/context
           http://www.springframework.org/schema/context/spring-context-2.5.xsd">
  <bean id="fapsMenuService" class="de.sf.faps.ui.menu.MenuService" scope="singleton" lazy-init="false" parent="fapsAbstractMenuService">
    <property name="menuItems">
      <list>
        <bean class="de.sf.faps.ui.menu.NavigationMenuItem">
          <property name="id" value="main_delete"/>
          <property name="parentId" value="main_functions"/>
          <property name="label" value="de.sf.faps.function.main.delete"/>
          <property name="action" value="delete_object_confirmation"/>
          <property name="useAjax" value="true"/>
          <property name="reRender" value="showTheModalPanel"/>
          <property name="oncomplete" value="Richfaces.showModalPanel('fapsModalPanel')"/>
          <property name="position" value="150"/>
          <property name="activeDependsOn" value="fapsCurrentFocus" />
          <property name="functionGroup" value="de.sf.faps.function.group.edit"/>
          <property name="styleClass" value="functionDelete"/>
          
          <property name="accessRights">
            <list>
              <bean class="de.sf.faps.ui.menu.NavigationMenuItem$MenuRight">
                <property name="right"><value>workspace_delete</value></property>
                <property name="type"><value>de.sf.faps.workspace.Workspace</value></property>
              </bean>
              <bean class="de.sf.faps.ui.menu.NavigationMenuItem$MenuRight">
                <property name="right"><value>node_delete</value></property>
                <property name="type"><value>de.sf.faps.node.Node</value></property>
              </bean>
              <bean class="de.sf.faps.ui.menu.NavigationMenuItem$MenuRight">
                <property name="right"><value>item_delete</value></property>
                <property name="type"><value>de.sf.faps.item.Item</value></property>
              </bean>
            </list>
          </property>
        </bean>
      </list>
    </property>
  </bean>
</beans>

Has anybody an idea wy this hapens or what am i doing wrong?

[Marten Deinum]

The inner bean should be a STATIC inner bean, else y ou cannot instantiate an instance outside the enclosing class.