Execute method from string

Asked Apr 18 '18 at 10:50

Active Apr 18 '18 at 12:08

Viewed 89 times

I have a String that contains method names with arguments.I wanna execute all methods.How can I do that.Consider following input -

String s="second(first(\"string1\"))";

where first(String s) and second(String s) are two method in my class.

Note that when I change Strings s=second(first("string1")); manually,its working fine, I'm looking for some dynamic approach to do same.

(If possible then without reflection).

edited Apr 18 '18 at 11:13

asked Apr 18 '18 at 10:50

Shivanshu Bagga

1

Google "Java Reflection API". – DodgyCodeException Apr 18 '18 at 10:51
And for the record: there are some reasonable use cases for reflection. But unless you fall into that rare category ... bad idea. Rather step back and look at the problem you really have to solve, and look for ways to do that differently. – GhostCat Apr 18 '18 at 10:52
@GhostCat I've updated my question , please check again. – Shivanshu Bagga Apr 18 '18 at 10:57
@DodgyCodeException I've updated my question , please check again. – Shivanshu Bagga Apr 18 '18 at 10:59
You could use a dynamic language such as Groovy instead of Java. – DodgyCodeException Apr 18 '18 at 11:09
@DodgyCodeException Thanks for suggestion , but groovy is not an option here. We need to do that using JAVA only. – Shivanshu Bagga Apr 18 '18 at 11:12
@GhostCat please remove duplicate mark from question. – Shivanshu Bagga Apr 18 '18 at 11:16
I added another existing question that discusses "dynamic" compiling. Your question is really not at all new - do some research first! – GhostCat Apr 18 '18 at 12:09
Here is the implementation using `janino-compiler` : https://www.jdoodle.com/a/tmn – Marinos An Apr 18 '18 at 12:53

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