A DESCRIPTION OF THE PROBLEM :

When ScripEngine is used for multiplying decimal numbers the answer is incorrect.
E.g. when engine eval method with formula multiplies 7.0*0.01*20 it gives 1.4000000000001. The correct answer is 1.4000000000.


import javax.script.ScriptEngine;
import javax.script.ScriptEngineManager;



public class Test {

public static void main(String[] args) throws Exception {
ScriptEngineManager factory = new ScriptEngineManager();
ScriptEngine engine = factory.getEngineByName("JavaScript");

System.out.println(engine.eval("7.0*0.01*20"));
}
}

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :

When ScripEngine is used for multiplying decimal numbers the answer is incorrect.
E.g. when engine eval method with formula multiplies 7.0*0.01*20 it gives 1.4000000000001. The correct answer is 1.4000000000.


import javax.script.ScriptEngine;
import javax.script.ScriptEngineManager;



public class Test {

public static void main(String[] args) throws Exception {
ScriptEngineManager factory = new ScriptEngineManager();
ScriptEngine engine = factory.getEngineByName("JavaScript");

System.out.println(engine.eval("7.0*0.01*20"));
}
}

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
7.0*0.01*20 it gives 1.4000000000001
ACTUAL -
7.0*0.01*20 it gives 1.4000000000000

---------- BEGIN SOURCE ----------
import javax.script.ScriptEngine;
import javax.script.ScriptEngineManager;



public class Test {

public static void main(String[] args) throws Exception {
ScriptEngineManager factory = new ScriptEngineManager();
ScriptEngine engine = factory.getEngineByName("JavaScript");

System.out.println(engine.eval("7.0*0.01*20"));
}
}
---------- END SOURCE ----------

FREQUENCY : always