自定义一个exception

自己定义exception来对一些业务上的问题进行处理

 

public class WorkerException extends Exception {
    public WorkerException(String msg){
        super(msg);
    }
    public WorkerException(String msg, Throwable ex) {
        super(msg,ex);
    }
}

 

 在程序中进行调用

 

public class Afdds {
	public static void main(String[] args){
		// TODO Auto-generated method stub
		String str="";
		if(str==""){
			try {
				throw new WorkerException("str为空");
			} catch (WorkerException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			}
		}
	}

}

程序运行结果：com.servyou.exception.WorkerException: str为空

 

             at com.servyou.business.Afdds.main(Afdds.java:16)