b.java

来自「java入门经典教程 java入门经典教程 java入门经典教程」· Java 代码 · 共 31 行

//例2.3.7 B.java
class A
{
int i = 9;  int j; 
	public A()              // 构造函数
{                        
		prt("i = " + i + ", j = " + j);
		j = 10;
	}
	static int x1 = prt("static A.x1 initialized");   // 静态初始化
	static int prt(String s) 
{
		System.out.println(s); 
		return 11; 
	}
}
public class B extends A
{
	int k = prt("B.k initialized");
	public B()                    // 构造方法
{                
		prt("k = " + k+" j = " + j);  // 继承父类的j
	}
	static int x2 = prt("static B.x2 initialized");
	public static void main(String[] args) 
{
		prt("B constructor");
		B iis = new B();
	}
}