parcel5.java

java的容器应用

//: Parcel5.java
// Nesting a class within a scope

public class Parcel5 {
	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) {
		Parcel5 p = new Parcel5();
		p.track();
	}
}