学步园

阅前声明: http://blog.csdn.net/heimaoxiaozi/archive/2007/01/19/1487884.aspx

/****************** Exercise 15 *****************
* Create a class containing an uninitialized
* String reference. Demonstrate that this
* reference is initialized by Java to null.
***********************************************/
public class E15_StringRefInitialization {
  String s;
  public static void main(String args[]) {
    E15_StringRefInitialization sri =
      new E15_StringRefInitialization();
    System.out.println("sri.s = " + sri.s);
  }
}

//+M java E15_StringRefInitialization

**The output is:

sri.s = null