outer8.java

java编程思想第四版习题答案

// innerclasses/Outer8.java
// TIJ4 Chapter Innerclasses, Exercise 8, page 354
/* Determine whether an outer class has access to the private elements of
* its inner class.
*/

class Outer8 {
	class Inner {
		private int ii1 = 1;
		private int ii2 = 2;
		private void showIi2() { System.out.println(ii2); }
		private void hi() { System.out.println("Inner hi"); }
		}
	// Need to create objects to access private elements of Inner:
	int oi = new Inner().ii1;
	void showOi() { System.out.println(oi); }
	void showIi2() { new Inner().showIi2(); }
	void outerHi() { new Inner().hi(); }
	public static void main(String[] args) {
		Outer8 out = new Outer8();
		out.showOi();
		out.showIi2();
		out.outerHi();
	}
}