get function name in runtime and execute

Question

Want to execute a function in runtime, which function name is got it from runtime:

public static void callClassname() throws Exception
{
    String[] getExecute =getInputdata.getEligibleColoumn();
    for(int i=0 ; i < getExecute.length ; i++)
    {
        getExecute[i] = getExecute[i].concat("()");String test = "classname." .concat(getExecute[i]);
        System.out.println("Test Passed:" + test);
    }
}

in the above code test will give the result classname.functionname(). I want to execute it or call it. Could you please help me how to do it, or any other better way? plz suggest.

if you have call this function in your main method or test annotation then this code will always run and if not then never — Shubham Jain, Mar 15 '16 at 12:46
I don't see a way of doing that and `Classname.function()` works only for static functions. You could keep numbers or assign integers to denote methods and call them appropriately. — Mathews Mathai, Mar 15 '16 at 12:50
http://stackoverflow.com/questions/935175/convert-string-to-code — Mathews Mathai, Mar 15 '16 at 12:56
http://stackoverflow.com/questions/19408837/convert-string-to-runtime-code-in-java — Mathews Mathai, Mar 15 '16 at 12:57

score 0 · Answer 1 · answered Mar 15 '16 at 12:53

0

The best way to solve this problem and to call instance methods is to use Java Reflection API

answered Mar 15 '16 at 12:53

Cootri

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Mathews Mathai · Answer 2 · 2016-03-15T13:06:40.950

0

What you are looking for is convert String to code at runtime and you could use BeanShell to achieve this.

You could download it from here:

http://www.beanshell.org/download.html

You could also check out Java Compiler API:

https://www.javacodegeeks.com/2015/09/java-compiler-api.html

edited Mar 15 '16 at 13:06

answered Mar 15 '16 at 13:01

Mathews Mathai

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31

get function name in runtime and execute

2 Answers2