secondouter.java

JAVA编程思想第四版英文原版习题答案. pdf原版的

// innerclasses/SecondOuter.java
// TIJ4 Chapter Innerclasses, Exercise 26, page 383
/* Create a class with an inner class that has a non-default constructor
* (one that takes arguments). Create a second class with an inner
* class that inherits from the first inner class.
*/

class FirstOuter {
	public class FirstInner {
		FirstInner(String s) { 
			System.out.println("FirstOuter.FirstInner() " + s ); 
		}
	}
}

public class SecondOuter {
	public class SecondInner extends FirstOuter.FirstInner {
		SecondInner(FirstOuter x) { 
			x.super("hello"); 
			System.out.println("SecondOuter.SecondInner()"); 
		}		
	}
	public static void main(String[] args) {
		FirstOuter fo = new FirstOuter();
		SecondOuter so = new SecondOuter();
		SecondInner si = so.new SecondInner(fo);		
	}	
}