?? group4.java
字號:
public class Group4
{
public abstract class Student_abstract //抽象內部類
{
int count;
String name;
public abstract void output(); //抽象方法
}
public class Student extends Student_abstract //繼承抽象內部類
{
public Student(String n1)
{
name = n1;
count++; //Student.count
}
public void output() //實現抽象方法
{
System.out.println(this.name +" count="+this.count);
}
}
public Group4()
{
Student s1 = new Student("A");
s1.output();
Student s2 = new Student("B");
s2.output();
}
public static void main (String args[])
{
Group4 g4 = new Group4();
}
}
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