ex8.java

java编程思想第四版习题答案

// reusing/Ex8.java
// TIJ4 Chapter Reusing, Exercise 8, page 246
/* Create a base class with only a non-default constructor, and a derived class
* with both a default (no-arg) and non-default constructor. In the derived-class
* constructors, call the base-class constructor.
*/

import static org.greggordon.tools.Print.*;

class A {
	A(char c, int i) { println("A(char, int)");}
}

class Ex8 extends A {
	private char c;
	private int i;
	Ex8() {
		super('z', 3);
		println("Ex8()");
	}
	Ex8(char a, int j) {
		super(a, j);
		c = a;
		i = j;
		println("Ex8(char,int)");
	}
	public static void main(String[] args) {
		Ex8 ex1 = new Ex8();
		Ex8 ex2 = new Ex8('b', 2);
	}
}