parcel6.java

来自「Thinking in JAVA第四版源代码」· Java 代码 · 共 26 行

//: innerclasses/Parcel6.java
// Nesting a class within a scope.

public class Parcel6 {
  private void internalTracking(boolean b) {
    if(b) {
      class TrackingSlip {
        private String id;
        TrackingSlip(String s) {
          id = s;
        }
        String getSlip() { return id; }
      }
      TrackingSlip ts = new TrackingSlip("slip");
      String s = ts.getSlip();
    }
    // Can't use it here! Out of scope:
    //! TrackingSlip ts = new TrackingSlip("x");
  }	
  public void track() { internalTracking(true); }
  public static void main(String[] args) {
    Parcel6 p = new Parcel6();
    p.track();
  }
} ///:~