Custom exception

Custom exception

While the program is running , Sometimes when you finish executing a piece of code, you find that the program code is illogical , So we want to return End this code , But the return value type of the method where this code is located is void, So we can't return, So what should we do at this time ？ At this time, we can customize an exception , Then actively throw an exception in the method .

The custom exception code is as follows :

/** * @Author zy.xuan * @Date 2022/6/21 14:13 */
public class ComplaintExeception extends RuntimeException {
    
    private String message;
    public ComplaintExeception(String message){
    
        this.message = message;
    }

    @Override
    public String toString() {
    
        return message;
    }
}

Test custom exceptions , Here's the picture ：