【设计模式-单例模式】

public class Environment {
private static final Environment  instance = new Environment ();
private List<QueryAttenderResult> attenderList;//销售人列表

private Environment () {}
public static Environment getInstance() {
if (instance != null) {
return instance;
} else {
return new Environment ();
}
}

public List<QueryAttenderResult> getAttenderList() {
return attenderList;
}
public void setAttenderList(List<QueryAttenderResult> attenderList) {
this.attenderList = attenderList;
}
}