child.java

这是一张java应用教程的随书光盘

class Parent{
	private int f1 = 1;
	int f2 = 2;
	protected  int f3 = 3;
	public  int f4 = 4;
	private void fm1() {
		System.out.println("in fm1() f1=" + f1);
	}
	void fm2() {
		System.out.println("in fm2() f2=" + f2);
	}
	protected void fm3() {
		System.out.println("in fm3() f3=" + f3);
	}
	public void fm4() {
		System.out.println("in fm4() f4=" + f4);
	}	
}
class Child extends Parent{
	public int f1 = 19;
	private int c1 = 21;
	public  int c2 = 22;
	private void fm1() {
		System.out.println("in fm1() f1=" + f1);
	}
	private void cm1(){
		System.out.println("in cm1() c1=" + c1);
	}
	public 	void cm2(){
		System.out.println("in cm2() c2=" + c2);
	}
	public static void main(String args[]){
		int i; 
		Parent  p = new Parent();		
		//i = c.f1;c.fm1(); //非法访问
		i = p.f2;p.fm2();
		i = p.f3;p.fm3();
		i = p.f4;p.fm4();	
						
		Child  c = new Child();
		i = c.f1;c.fm1(); //非法访问
		i = c.f2;c.fm2();
		i = c.f3;c.fm3();
		i = c.f4;c.fm4();	
		c.cm1();
		c.cm2();		
	}
}