Example: Internationalization context in a session bean

The following code example illustrates how to perform a localized operation using the internationalization service within a session bean or Web service-enabled session bean.
...   
//------------------------------------------------------------
// INTERNATIONALIZATION SERVICE: Imports.
//------------------------------------------------------------
import com.ibm.websphere.i18n.context.UserInternationalization;
import com.ibm.websphere.i18n.context.Internationalization;
import com.ibm.websphere.i18n.context.InvocationInternationalization;

import javax.naming.InitialContext;
import javax.naming.Context;
import javax.naming.NamingException;
import java.util.Locale;

/**
 * This is a stateless Session Bean Class
 */
public class J2EESessionBean implements SessionBean {

  //------------------------------------------------------------
  // INTERNATIONALIZATION SERVICE: API references.
  //------------------------------------------------------------
  protected UserInternationalization        userI18n = null;
  protected InvocationInternationalization  invI18n  = null;

  //------------------------------------------------------------
  // INTERNATIONALIZATION SERVICE: JNDI name. 
  //------------------------------------------------------------
  public static final String UserI18NUrl = 
      "java:comp/websphere/UserInternationalization";  
  ...
  
  /**
   * Obtain the appropriate internationalization interface 
   * reference in this method.
   * @param ctx javax.ejb.SessionContext
   */
  public void setSessionContext(javax.ejb.SessionContext ctx) {

    //------------------------------------------------------------
    // INTERNATIONALIZATION SERVICE: Resolve the API.
    //------------------------------------------------------------
    try {
      Context initialContext = new InitialContext();    
      userI18n = (UserInternationalization)initialContext.lookup(
          UserI18NUrl);
      invI18n = userI18n.getInvocationInternationalization();
    } catch (NamingException ne) {
      log("Error: Cannot resolve UserInternationalization: Exception: " + ne);
        
    } catch (IllegalStateException ise) {
      log("Error: UserInternationalization is not available: " + ise);
    }
  } // setSessionContext 

 /**
  * Set up resource bundle using I18n Service
  */
  public void setResourceBundle()
  {
    Locale invLocale   = null;

    //------------------------------------------------------------
    // INTERNATIONALIZATION SERVICE: Get invocation context.
    //------------------------------------------------------------
    try {
      invLocale = invI18n.getLocale();
    } catch (IllegalStateException ise) {
      log ("An anomaly occurred while accessing Invocation context: " + ise );
    }
    try {    
      Resources.setResourceBundle(invLocale);
      // Class Resources provides support for retrieving messages from
      // the resource bundle(s). See Currency Exchange sample source code.
    } catch (Exception e) {
      log("Error: Exception occurred while setting resource bundle: " + e);
    }
  } // setResourceBundle

  /**
   * Pass message keys to get the localized texts
   * @return java.lang.String []
   * @param key java.lang.String []
   */
  public String[] getMsgs(String[] key) {
    setResourceBundle();
    return Resources.getMsgs(key);    
  }

  ...
  void log(String s) {
    System.out.println(((s == null) ? ";null" : s));
  }
} // CLASS J2EESessionBean
Example: Internationalization context in a session bean

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