考虑用静态工厂方法替代构造器的情况

publicclass CreateObject {

   intage;

   String name;

   public CreateObject(String name){

      this.name = name;

   }

   public CreateObject(String name,int age){

      this.name = name;

      this.age = age;

   }

   //....

   publicstatic CreateObject getInstanceWithName(String name){

      returnnew CreateObject(name);

   }

   publicstatic CreateObject getInstanceWithNameAndAge(String name,int age){

      returnnew CreateObject(name, age);

   }

   publicstaticvoid main(String[]args){

      CreateObject createObject = new CreateObject("nnn");

      CreateObject createObject2 = new CreateObject("nnn", 11);

      CreateObject createObject3 = CreateObject.getInstanceWithName("mmm");

      CreateObject createObject4 = CreateObject.getInstanceWithNameAndAge("mmm", 22);

   }

}