EN
Java - return status code from main()
7 points
In this short article, we would like to show how to return the status code from the main function in Java.
Quick solution:
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// put at the end of the main()2
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System.exit(statusCode);4
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// e.g.6
System.exit(2);
Program.java file:
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package example;2
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public class Program {4
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public static void main(String[] args) {6
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System.exit(2); // 0 usually means the program ended successfully8
// other numbers describe error code9
// e.g. 10
// here we returned error with code 211
}12
}Example output:
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Process finished with exit code 2Hint: in Bash, we can use exit status from program / command and do some decisions,
e.g.
xxxxxxxxxx1command23if [ $? = 2 ];4then5echo "error detected";6fi
Above code is equivalent to the following c++ / cpp code version:
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using namespace std;2
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int main()4
{5
return 2; // 0 usually means the program ended successfully6
// other numbers describe error code7
// e.g. 8
// here we returned error with code 29
}