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Why isn't the filter method working?

As given in the docs of Apache Edgent I tried to filter out my sensor readings wherein the values of the temperature sensor must lie in between 80 to 85 F.
But when I tried connecting my sensor the readings were 75F and no message was shown like: temperature is out of range.
Is it that the filter method isn't working? if so please try help me out. thanks.
the range values are set as:
static double OPTIMAL_TEMP_LOW = 80.0;
static double OPTIMAL_TEMP_HIGH = 85.0;
static Range<Double> optimalTempRange = Ranges.closed(OPTIMAL_TEMP_LOW, OPTIMAL_TEMP_HIGH);
The sensor object is TempSensor ts
TempSensor ts = new TempSensor();
Stream<Double> temp = top.poll(ts, 1, TimeUnit.MILLISECONDS);
the filtering part:
TStream<Double> simpleFiltered = temp.filter(tuple ->
tuple < OPTIMAL_TEMP_LOW || tuple > OPTIMAL_TEMP_HIGH);
simpleFiltered.sink(tuple -> System.out.println("Temperature is out of range! "
+ "It is " + tuple + "\u00b0F!"));
/*TStream<Double> simpleFiltered = temp.filter(tuple ->
!optimalTempRange.contains(tuple));
simpleFiltered.sink(tuple -> System.out.println("Temperature is out of range! "
+ "It is " + tuple + "\u00b0F!"));*/
// See what the temperatures look like
simpleFiltered.print();
dp.submit(top);
output:
Selet a port:
1: ttyACM0 Port opened succesefully.
7373.40
73.40
73.40 ...

I think that happened because your filter and sink have been assigned to another TStream object, not the one you are printing out.
Probably you need to try this:
TempSensor ts = new TempSensor();
TStream<Double> temp = top.poll(ts, 1, TimeUnit.MILLISECONDS).filter(tuple ->
tuple < OPTIMAL_TEMP_LOW || tuple > OPTIMAL_TEMP_HIGH);
temp.sink(tuple -> System.out.println("Temperature is out of range! "
+ "It is " + tuple + "\u00b0F!"));
// See what the temperatures look like
temp.print();
dp.submit(top);

Hmm, your code matches the example in the documentation, but it looks as if we’re creating a filtered stream, and then ignoring it in temp.print().
You could try changing that line to simpleFiltered.print()

How to get solution X prolog in java

I use jpl libraries to connect prolog and java. In prolog, I can execute query :
?- meaning_forms([apple,is,fruit],X).
output is : X = [is_a(x1, x2), objectx(x1, apple), objectx(x2, fruit)].
But in java, I can’t see output of this query. I tried some code in java :
Variable X = new Variable("X");
Query q4 = new Query("meaning_forms", new Term[]{new Atom("apple,is,fruit"),X});
while ( q4.hasMoreElements() ) {
java.util.Hashtable solution = (Hashtable) q4.nextElement();
System.out.println( "X = " + (Term) solution.get("X"));
}
There is no output in java . Any solution to this case?

Hashtable[] solutions = q4.allSolutions();
for (int i = 0 ; i < solutions.length; ++i) {
System.out.println("X = " + solutions[i].get(X));
}
See also http://www.swi-prolog.org/packages/jpl/java_api/getting_started.html

Input decimal or double numbers in JAVA

How can I input a decimal or double number as it is? I want if I input .56 it saves in the database as .56 not 1 because its rounding up and I want to ignore the rounding...
This is servlet, well I have beans and its also set to double; I also tried DecimalFormat but still not working or maybe I just don't know how to use it.
neutrophils = rs.getInt("neutrophils");
monocytes = rs.getInt("monocytes");
eosinophils = rs.getInt("eosinophils");
basophils = rs.getInt("basophils");
lymphocytes = rs.getInt("lymphocytes");
total= (neutrophils + monocytes + eosinophils + eosinophils + basophils + lymphocytes);
I made it like this, I changed the value of datatype to VARCHAR but the error is java.lang.NullPointerException; why is that?
neutrophils = Double.parseDouble(rs.getString("neutrophils"));
monocytes = Double.parseDouble(rs.getString("monocytes"));
eosinophils = Double.parseDouble(rs.getString("eosinophils"));
basophils = Double.parseDouble(rs.getString("basophils"));
lymphocytes = Double.parseDouble(rs.getString("lymphocytes"));
bands = (neutrophils + monocytes + eosinophils + eosinophils + basophils + lymphocytes);

If rs is ResultSet you can simply use rs.getDouble. If for some reason you don't want to use it, get the result as a String and then convert
Double.parseDouble(rs.getString(ColumnLabel));

How can I make the numbers that I print in this code right adjusted?

How can I make the numbers that I print in this code right adjusted?
Since the numbers in the code are variables do I need to do something different than normally adjusting it?
a = 4 ;
b = 4 ;
c = 1 ;
x = 2 ;
Root = (-1*b + Math.sqrt( Math.pow(b,2) - 4*a*c)/ 2*a );
CoefficientOfXSquared = (-(b*x+c)/(Math.pow(x,2)) );
CoefficientOfX = (-(a*x+c)-c/x );
Constant = (-(a*Math.pow(x,2)+b*x) );
System.out.println("\n\n\t Given that: \n\t CoefficientOfXSquared = " +a );
System.out.println("\n\t CoefficientOfX = " +b );
System.out.println("\n\t Constant = " +c );
System.out.println("\n\t Root = " +x );
System.out.println("\n\n\t x = " + Root );
System.out.println("\n\t a = " + CoefficientOfXSquared );
System.out.println("\n\t b = " + CoefficientOfX );
System.out.println("\n\t c = " + Constant );
System.out.println("\n\n\n" );
I would appreciate it if someone could explain how to make it right adjusted.

Try using string format method to print them. Like this:
double x=1234.56;
double y=78.678;
System.out.printf("%n\t Root = %12.4f", x);
System.out.printf("%n\t Constant = %12.4f%n", y);
which gives:
Root = 1234.5600
Constant = 78.6780
I am assuming that these are doubles. Look up printf for more info.
Cliff

I think the docs are about the best for this, shows how to format numerics outputs using printf() here is also a great tutorial on formatting numbers in java

You can do this to right justify the text.
String.format("%50s", "Root = " + root);
Try String format function, format arguments provide many options to customize the printing.

How to use Rhino library to use javascript code in Java?

I am working on a GPS app and I want to convert my latitudes and longitudes into x-y coordinates based on WGS84 datum. I found this js page to do this: http://www.uwgb.edu/dutchs/usefuldata/ConvertUTMNoOZ.HTM. I also had a look at other calculators but this one is more accurate. Now if you see the source, functions to perform conversion is being provided. I googled how can I use js code in Java and found out that this library can be used to do this: http://www.mozilla.org/rhino/. I added jar to my eclipse project and ran examples from here (http://www.mozilla.org/rhino/examples.html) but an not able to figure out how can I use functions from the source code of that page.
function GeogToUTM(){
//Convert Latitude and Longitude to UTM
Declarations();
k0 = 0.9996;//scale on central meridian
b = a*(1-f);//polar axis.
//alert(a+" "+b);
//alert(1-(b/a)*(b/a));
e = Math.sqrt(1 - (b/a)*(b/a));//eccentricity
//alert(e);
//Input Geographic Coordinates
//Decimal Degree Option
latd0 = parseFloat(document.getElementById("DDLatBox0").value);
lngd0 = parseFloat(document.getElementById("DDLonBox0").value);
latd1 = Math.abs(parseFloat(document.getElementById("DLatBox0").value));
latd1 = latd1 + parseFloat(document.getElementById("MLatBox0").value)/60;
latd1 = latd1 + parseFloat(document.getElementById("SLatBox0").value)/3600;
if (parseFloat(document.getElementById("DLatBox0").value)<0){latd1=-latd1;}
lngd1 = Math.abs(parseFloat(document.getElementById("DLonBox0").value));
lngd1 = lngd1 + parseFloat(document.getElementById("MLonBox0").value)/60;
lngd1 = lngd1 + parseFloat(document.getElementById("SLonBox0").value)/3600;
if (parseFloat(document.getElementById("DLonBox0").value)<0){lngd1=-lngd1;}
lngd=lngd0;
latd=latd0;
if(isNaN(latd)){
latd = latd1;
document.getElementById("DDLatBox0").value = Math.floor(1000000*latd)/1000000;
lngd=lngd1;
document.getElementById("DDLonBox0").value = Math.floor(1000000*lngd)/1000000;
}
if(isNaN(lngd)){lngd = latd1;}
if(isNaN(latd)|| isNaN(lngd)){
alert("Non-Numeric Input Value");
}
if(latd <-90 || latd> 90){
alert("Latitude must be between -90 and 90");
}
if(lngd <-180 || lngd > 180){
alert("Latitude must be between -180 and 180");
}
xd = lngd;
yd = latd;
DDtoDMS();
//Read Input from DMS Boxes
document.getElementById("DLatBox0").value = Math.floor(ydd);
document.getElementById("MLatBox0").value = ym;
document.getElementById("SLatBox0").value = Math.floor(1000*ys)/1000;
document.getElementById("DLonBox0").value = Math.floor(xdd);
document.getElementById("MLonBox0").value = xm;
document.getElementById("SLonBox0").value = Math.floor(1000*xs)/1000;
phi = latd*drad;//Convert latitude to radians
lng = lngd*drad;//Convert longitude to radians
utmz = 1 + Math.floor((lngd+180)/6);//calculate utm zone
latz = 0;//Latitude zone: A-B S of -80, C-W -80 to +72, X 72-84, Y,Z N of 84
if (latd > -80 && latd < 72){latz = Math.floor((latd + 80)/8)+2;}
if (latd > 72 && latd < 84){latz = 21;}
if (latd > 84){latz = 23;}
zcm = 3 + 6*(utmz-1) - 180;//Central meridian of zone
//alert(utmz + " " + zcm);
//Calculate Intermediate Terms
e0 = e/Math.sqrt(1 - e*e);//Called e prime in reference
esq = (1 - (b/a)*(b/a));//e squared for use in expansions
e0sq = e*e/(1-e*e);// e0 squared - always even powers
//alert(esq+" "+e0sq)
N = a/Math.sqrt(1-Math.pow(e*Math.sin(phi),2));
//alert(1-Math.pow(e*Math.sin(phi),2));
//alert("N= "+N);
T = Math.pow(Math.tan(phi),2);
//alert("T= "+T);
C = e0sq*Math.pow(Math.cos(phi),2);
//alert("C= "+C);
A = (lngd-zcm)*drad*Math.cos(phi);
//alert("A= "+A);
//Calculate M
M = phi*(1 - esq*(1/4 + esq*(3/64 + 5*esq/256)));
M = M - Math.sin(2*phi)*(esq*(3/8 + esq*(3/32 + 45*esq/1024)));
M = M + Math.sin(4*phi)*(esq*esq*(15/256 + esq*45/1024));
M = M - Math.sin(6*phi)*(esq*esq*esq*(35/3072));
M = M*a;//Arc length along standard meridian
//alert(a*(1 - esq*(1/4 + esq*(3/64 + 5*esq/256))));
//alert(a*(esq*(3/8 + esq*(3/32 + 45*esq/1024))));
//alert(a*(esq*esq*(15/256 + esq*45/1024)));
//alert(a*esq*esq*esq*(35/3072));
//alert(M);
M0 = 0;//M0 is M for some origin latitude other than zero. Not needed for standard UTM
//alert("M ="+M);
//Calculate UTM Values
x = k0*N*A*(1 + A*A*((1-T+C)/6 + A*A*(5 - 18*T + T*T + 72*C -58*e0sq)/120));//Easting relative to CM
x=x+500000;//Easting standard
y = k0*(M - M0 + N*Math.tan(phi)*(A*A*(1/2 + A*A*((5 - T + 9*C + 4*C*C)/24 + A*A*(61 - 58*T + T*T + 600*C - 330*e0sq)/720))));//Northing from equator
yg = y + 10000000;//yg = y global, from S. Pole
if (y < 0){y = 10000000+y;}
//Output into UTM Boxes
document.getElementById("UTMzBox1").value = utmz;
document.getElementById("UTMeBox1").value = Math.round(10*(x))/10;
document.getElementById("UTMnBox1").value = Math.round(10*y)/10;
if (phi<0){document.getElementById("SHemBox").checked=true;}
//document.getElementById("UTMzBox1").value = utmz;
//document.getElementById("UTMeBox1").value = Math.round(10*(500000+x))/10;
document.getElementById("UTMLonZoneBox2").value = utmz;
document.getElementById("UTMLatZoneBox2").value = DigraphLetrsE[latz];
document.getElementById("UTMeBox2").value = Math.round(10*(x-100000*Math.floor(x/100000)))/10;
document.getElementById("UTMnBox2").value = Math.round(10*(y-100000*Math.floor(y/100000)))/10;
//Generate Digraph
MakeDigraph();
document.getElementById("UTMDgBox2").value = Digraph;
}//close Geog to UTM
///////////////////////////////////////////////////////////////////////
I know I can't use this function as is as it is embedded within HTML. But I have never worked on js so it would be easier for me if I am needed to do minimum changes to the code.

If you just want to run JavaScript and you don't particularly care about using Rhino versus the more generic Java Scripting API, please see the following blog post I wrote:
http://springinpractice.com/2012/05/13/how-to-run-javascript-from-java/
If in fact you want actual Rhino code for whatever reason, here's some sample code that uses Rhino:
https://github.com/springinpractice/sip09/blob/03/src/main/java/com/springinpractice/ch09/comment/service/impl/RichTextFilter.java

You will have to ask if you can use it first - but he says he's generally happy to give people permission to use his work.
All the calls to document.getElementById refer to inputs on the html page.
You'll have to rewrite the function so that you pass these variables to it - as you won't have access to the javascript dom when you run it.
You'll have to work out what you want it to return too, it looks like it displays calculated values across a few fields so you'll probably have to return a map of the fieldname to the calculated value - then you will be to use the results in your java program.
The script you posted also refers to these functions that are missing, so you'll have to find them too, and include them in your script:
MakeDigraph();
DDtoDMS();
Declarations();
I'd recommend that you remove the validation bit of the code with the alerts and just handle this is your java code
It's not going to be very efficient but if that doesn't matter then good luck!