C#： public class studyingClass    {      private float width=2;           public float Width         {             get { return this.width; }          set { width = value; }         }               }java：public class Studyingclass{private float width=2;public float getWidth(){return width;}public void setWidth(float value){this.width=value;}}java中的get set方法，一定要叫那樣的名字嗎？？我叫get2009這樣的可以嗎？？