struts2中关于ApplicationAware

public class TestAware implements ApplicationAware{

public String execute(){

    //1. 向 application 中加入一个属性: applicationKey2 - applicationValue2
    application.put("applicationKey2", "applicationValue2");

    //2. 从 application 中读取一个属性 date, 并打印. 
    System.out.println(application.get("date"));

    return "success";
}
private Map<String, Object> application;
@Override
public void setApplication(Map<String,Object> aplicationMap) {
    // TODO Auto-generated method stub
    this.application = application;
}

}

请问楼主想要表达什么意思？