自定义两个异常，为什么这样有错，到底错哪了，求大神指导
class EmptyStackException extends Exception
{
public EmptyStackException(String message)
{
super(message);
}
}
class FullStackException extends Exception
{
public FullStackException(String message)
{
super(message);
}
}
public class UserdefinedException
{
public static void main(String[] args)
{
try
{
throw new EmptyStackException("堆栈空。");
throw new FullStackException("堆栈满。");
}
catch (EmptyStackException e)
{
System.out.println("异常信息是：\n" + e.toString());
}
catch (FullStackException e)
{
System.out.println("异常信息是：\n" + e.toString());
}
}
} java 报错
[解决办法]

class EmptyStackException extends Exception {
public EmptyStackException(String message) {
super(message);
}
}

class FullStackException extends Exception {
public FullStackException(String message) {
super(message);
}
}

public class UserdefinedException {
public static void main(String[] args) throws Exception{
throw new EmptyStackException("堆栈空。");
}
}