範例

public class BeanClass implements javax.ejb.EntityBean {
private static Policy p;
private static Policy p2;
public void manageSecurity(){
//..
p = p2.getPolicy();
p2 = p;
Policy p3 = p;
}
//必須實作這個介面的其他方法
}

解決方案
請勿存取或修改 java.security.* 物件(Policy、Security、Provier、Principal、KeyStore)