What does "Process finished with exit code 1" mean in intellij-idea?

Question

I got the error "Process finished with exit code 1" when I was running my Java code. I am using Intellij IDEA 2018.3. Below is the error log I got.

Answer 1

To get more information on the exit code try putting a try catch around the SpringApplication.run() function like this:

try
{
    SpringApplication.run(Application.class, args);
}
catch (Throwable throwable)
{
    System.out.println(throwable.toString());
    throwable.printStackTrace();
}

Answer 2

While running a Java application in Intellij Idea, after the program execution, JVM prints the exit code to the console. If the program terminates without any exception, exit code 0 is printed. Otherwise, any signed integer may be outputted.