單一出口

one_exit_point.java

//單一出口
public String doSomething(MyType type) {
  String result;
  switch(type) {
    type1:
      result = "1";
      break;
    type2:
      result = "2";
      break;
    default:
      result = null;
      break;
  }
  return result;
}