源码为:
class CCircle
{
protected double radius;
protected static double pi=3.14; public CCircle(double r) {
radius=r;
}
public void show(){
System.out.println("radius="+radius);
}
}
class CCoin extends CCircle
{ private int value;
public CCoin(double r,int v){
super(r);
value=v;
}
public void show(){
System.out.println("radius="+radius+",value="+value);
}
}
class app9_7
{
public static void main(String args[]){
CCircle cir=new CCoin(2.0,5);
cir.show();
//cir.showValue();
}
}去掉//cir.showValue();后编译提示为:
app9_7.java:32: cannot resolve symbol
symbol : method showValue ()
location: class CCircle
cir.showValue();
^
1 error我是新手,请各位多关照!
class CCircle
{
protected double radius;
protected static double pi=3.14; public CCircle(double r) {
radius=r;
}
public void show(){
System.out.println("radius="+radius);
}
}
class CCoin extends CCircle
{ private int value;
public CCoin(double r,int v){
super(r);
value=v;
}
public void show(){
System.out.println("radius="+radius+",value="+value);
}
}
class app9_7
{
public static void main(String args[]){
CCircle cir=new CCoin(2.0,5);
cir.show();
//cir.showValue();
}
}去掉//cir.showValue();后编译提示为:
app9_7.java:32: cannot resolve symbol
symbol : method showValue ()
location: class CCircle
cir.showValue();
^
1 error我是新手,请各位多关照!
而且楼主题意不清,是指将注释符//去掉出现了错误吧?