Java run Main Method inside Java Program do not exit afterwards

Question

Hi I use the following code to run main method with args from another jar:

import com.foo.bar.MainApp;

class MyInitClass {
    public static void main(String args[]) {

        // call second main method
        MainApp.main(new String[] {"-port", "8080"});

        // this code gets never executed
        System.out.println("Never gets called");
    }
}

The nested main(new String[] {"-port", "8080"}) method gets executed but then the whole program gracefully exits.

How can I continue that the System.out.println gets also executed.

What does the other main method do? If it calls `System.exit()`, there is nothing you can do. — Seelenvirtuose, May 22 '19 at 08:57
Try wrapping it in an exception handler and see if an exception is thrown. — Steve Smith, May 22 '19 at 08:57
@SteveSmith it "exits gracefully". if an exception were thrown, and not caught, that wouldn't be the case — Stultuske, May 22 '19 at 08:59
You might check https://stackoverflow.com/questions/5401281/preventing-system-exit-from-api if the called main does a `System.exit()` — Gyro Gearless, May 22 '19 at 09:04
There's nothing wrong on how you execute the main method of the MainApp, Then like @Seelenvirtuose the second class might have called a `System.exit()`. — Francis G, May 22 '19 at 09:07
If you just want to execute the next line after the cal of `MainApp.main(new String[] {"-port", "8080"});` then why not use Async call? — Francis G, May 22 '19 at 09:11
The problem is that the main method in the .jar file calles "System.exit()" so I have to change the source code of the jar file. Thanks for pointing that out — Viktor Carlson, May 22 '19 at 09:58

score 0 · Answer 1 · answered May 22 '19 at 10:00

0

The problem is that the main method in the .jar file calles "System.exit()" so I have to change the source code of the jar file. Thanks for pointing that out.

answered May 22 '19 at 10:00

Viktor Carlson

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Java run Main Method inside Java Program do not exit afterwards

1 Answers1