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Anyone can explain to me what should i do to pass it and how it works?

All exceptions that occur while the Solution thread is running must be handled by one of these options:
1. If it's an Error, then display "Can't keep running".
2. If it's an Exception, then display "Needs handling".
3. If it's a Throwable, then display "Wait and see".
Implement this logic.

Requirements:

The Solution constructor must set the thread's UncaughtExceptionHandler, which catches errors and outputs text to the console.
If the Solution thread stops running due to an Error, you need to display "Can't keep running".
If the Solution thread stops running due to an Exception, you need display "Needs handling".
If the Solution thread stops running due to a Throwable, you need to display "Wait and see".

package com.codegym.task.task25.task2510; /* Wait and see */ public class Solution extends Thread { public Solution() { setUncaughtExceptionHandler(new UncaughtExceptionHandler() { @Override public void uncaughtException(Thread myThread, Throwable e) { if (e.getCause() instanceof Error) { System.out.println("Can't keep running"); } if (e.getCause () instanceof Exception) { System.out.println("Needs handling"); } if ( e instanceof Throwable) { System.out.println("Wait and see"); } } }); } public static void main(String[] args) { } }

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Guadalupe Gagnon

Level 37 , Tampa, United States

14 May 2020, 20:22

useful

It's been awhile since I have done this and I don't have my original solve, but I have a few thoughts.: 1) the getCause() method returns a Throwable, which would make both lines 17 and 21 false no matter what. 2) Error and Exception both are descendants of Throwable, which means that using if statements will result in 2 outputs when an Error or an Exception occur. 3) (this may not be an issue in this task as you did pass the last condition, i would try 1 and 2 first before moving to this) I don't think you should be setting the ExceptionHandler for all threads using the setUncaughtExceptionHandler method. There is another similar method used for all threads.

Arnold Cytrowski

Level 29 , Breslau, Poland

15 May 2020, 09:15

about 1 and 2: i try e.g "e instance of Error/Exception" and that wasnt working too

Arnold Cytrowski

Level 29 , Breslau, Poland

15 May 2020, 09:31

ok, primitive as hell, but here is the solution. Thank you, GG

public class Solution extends Thread {

    public Solution() {




       setUncaughtExceptionHandler(new UncaughtExceptionHandler() {
            @Override
            public void uncaughtException(Thread myThread, Throwable e) {
                if (e instanceof Error) {
                    System.out.println("Can't keep running");

                }
                if (e instanceof Exception) {
                    System.out.println("Needs handling");
                }
                if (e instanceof Throwable && !(e instanceof Error) && !(e instanceof Exception))
                    System.out.println("Wait and see");
            }
        });

    }

    public static void main(String[] args) {
    }
}

Guadalupe Gagnon

Level 37 , Tampa, United States

15 May 2020, 13:28

why not: if(...) else if(...) else if(...)