Calling a Java Method using ProcessBuilder

Asked Nov 04 '19 at 22:40

Active Nov 04 '19 at 22:48

Viewed 81 times

Is there any way to call a Java method using the ProcessBuilder API?

I wish to execute a Java method using processes only for some reason. Thus, I have written this code so far -

ProcessBuilder p = new ProcessBuilder("java", "--version");
Process proc = p.start();

I know that this would print the current java version on my laptop. I wish to call a Java Method for example, Class1.doAddition() instead of printing the Java version.

Is there any way to do this?

edited Nov 04 '19 at 22:48

Mick Mnemonic

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asked Nov 04 '19 at 22:40

Vivek

Write a class with a `main` method that calls that method. Compile everything and build a `java` launch command that use that class as its entry point. – Sotirios Delimanolis Nov 04 '19 at 22:50
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What are you intending to do with the _results_ of `doAddition()`? This sounds like the wrong way to do what you're trying to do for many reasons. – Mick Mnemonic Nov 04 '19 at 22:51
@SotiriosDelimanolis Thanks, I'll do as you suggested. – Vivek Nov 04 '19 at 23:22
@MickMnemonic I just wish to call a function instead of a program. Whats wrong in this? – Vivek Nov 04 '19 at 23:22
Nothing, but why are you trying to use a mechanism designed to run a program to cal a method? – user207421 Nov 04 '19 at 23:42

Calling a Java Method using ProcessBuilder

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