所以我给了这段代码,我必须创建一个例外,然后使用Try/Catch
块来捕获它。我已经在代码的底部创建了Exception。但我从来没有使用过Try/Catch
Block,我不知道如何实现它。尝试使用Java中的捕获块
例外是,如果输入了未在enum
下列出的等级。我还需要使用toString
以及发生异常的情况,但我很确定我能确定这一点。
package pracapp4;
import java.util.Scanner;
public class Staff extends Employee
{
enum Title
{
DEPARTMENT_HEAD, DIRECTOR, DEAN, VICE_CHANCELLOR, CHANCELLOR
}
private Title title;
public Staff()
{
super();
title = Title.DEPARTMENT_HEAD;
}
public Staff(String firstName, String lastName, int salary, Title title)
{
super(firstName, lastName, salary);
this.title = title;
}
@Override
public String toString()
{
return super.toString() + "\n\tTitle: " + title;
}
@Override
public void display()
{
System.out.println("<<Staff>>" + this);
}
@Override
public void input(Scanner in)
{
super.input(in);
if (in.hasNext())
{
this.title = Enum.valueOf(Title.class, in.next());
}
}
class InvalidRankException extends Exception
{
public InvalidRankException()
{
super ("Unknown Rank Name: ");
}
}
}
是排名指的是标题枚举? – Victor 2009-07-24 00:01:29