Mega Code Archive
Working With JRuby
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import java.io.BufferedReader;
import java.io.FileReader;
import javax.script.Invocable;
import javax.script.ScriptEngine;
import javax.script.ScriptEngineManager;
public class MainClass {
public static void main(String[] args) throws Exception {
ScriptEngineManager manager = new ScriptEngineManager();
ScriptEngine engine = manager.getEngineByName("jruby");
engine.eval(new BufferedReader(new FileReader("r.rb")));
Invocable invocable = (Invocable) engine;
Object tempconverter = invocable.invokeFunction("getTempConverter");
double degreesCelsius = (Double) invocable.invokeMethod(tempconverter, "f2c", 98.6);
System.out.println(degreesCelsius);
double degreesFahrenheit = (Double) invocable.invokeMethod(tempconverter, "c2f",100.0);
System.out.println(degreesFahrenheit);
}
}
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# TempConverter.rb
class TempConverter
def c2f(degrees)
degrees*9.0/5.0+32
end
def f2c(degrees)
(degrees-32)*5.0/9.0
end
end
def getTempConverter
TempConverter.new
end
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