package homework;
public class text
{
public String toString()
{
return "Fruit toString.";
}
public static void main(String args[])
{
text f=new text();
System.out.println("f="+f);
// System.out.println("f="+f.toString());
}
}
此处的toString函数覆盖了Object中的toString函数
在子类中调用被覆盖的函数用super作为父类对象再调用函数即可
package homework;
public class text
{
public static void main(String[] args){
child baby=new child();
baby.eat();
}
}
class father{
public father(){
System.out.println("father created");
}
public void eat(){
System.out.println("2");
}
}
class child extends father{
public child(){
super();
System.out.println("child created");
}
public void eat(){
System.out.println("1");
super.eat();
}
}