excepti.java

贪食蛇的实现源码

package exception;
/*1、
写三个类：OwnException,OwnExceptionSource,OwnExcpeitonHandler. OwnExceptonSource
中有个方法a(),在a()中抛出一个异常OwnException,然后在OwnExceptionHandler中调用a()
并且要处理异常 */

public class Excepti  {
	//Excepti eexp=new Excepti ();
	public static void main(String[] args) {
		OwnExceptionHandler handler=new OwnExceptionHandler();//内部类问题？？
		handler.solve();
		
}
}
	class OwnException extends Exception {
		
		 OwnException (){this("OwnException");}
         OwnException(String msg){super(msg);}
		
		}
		
	
		

	class OwnExceptionHandler{
        public void solve(){
			OwnExceptionSource exp=new OwnExceptionSource();
			try{
				exp.a();
		    }
		catch(OwnException e){e.printStackTrace();}
		//{System.out.println(e.getMessage());}
        }
	}
	
	class OwnExceptionSource{
		 OwnExceptionSource(){}//和默认的一样可省略
		public void a() throws OwnException{
			throw new OwnException();//创建了一个异常，不创建没有
		}
	}