second-app.java

package com.liferay.tutorial;

import java.io.IOException;

import javax.portlet.ActionRequest;
import javax.portlet.ActionResponse;
import javax.portlet.PortletException;

import com.liferay.portal.kernel.util.ParamUtil;
import com.liferay.util.bridges.mvc.MVCPortlet;

/**
 * Portlet implementation class SecondPortlet
 */
public class SecondPortlet extends MVCPortlet {

  @Override
  public void processAction(ActionRequest actionRequest, ActionResponse actionResponse) throws IOException, PortletException {

    String name = ParamUtil.getString(actionRequest, "name");
  
    String message  = "";
    if ( name == null || name.isEmpty()) {
  
      message = "Hello World";
    } else {
   
      message = "Hello " + name;
    }
    actionResponse.setRenderParameter("message", message);
  
    super.processAction(actionRequest, actionResponse);
  }

}