Python code in Java

Hello,
I have a python script that accesses to a serial device to read/write data. Now I would like to build a JAVA application that extend this script. I can call this script as a program java? I should create a Java application that interact with the user and writes on this device using python script already in my possess. I do not wish rewrite the script python in Java.
I have used JEPP e Jython.........other ?

XmaverickX wrote:
duffymo wrote:
Or Jython.
http://www.jython.org/Project/index.html
%When i recompile (is right recompile ?) communication.py with jython get this error:
0 Note: Some input files use or override a deprecated API.
Note: Recompile with -deprecation for details.Did you recompile with -deprecation turned on to see what the details were? (I'd recommend that you do.)
After when i include Communication.class in my java project i get this error:
Exception in thread "main" Traceback (innermost last):
File "/home/maverick/prova/Communication.py", line 0, in main
File "/usr/lib/serial/__init__.py", line 9, in ?
AttributeError: class 'string' has no attribute 'split'Looks like the Jython string class does not have an attribute 'split' that you require. Maybe it was deprecated and removed.
Is this why you asked for something other than Jython? Better to understand and fix this problem.
%

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any help will be appreciated.

hi
check www.rgagnon.com for more source code in java.
regards
Pradheep

How to call C/C++ - Code from Java?

I would like to know if it is possible to call C or C++ - Code from Java and how to do.

In short, yes you can do this.
Have a look at http://java.sun.com/docs/books/tutorial/native1.1/concepts/index.html
to see how...
Good luck!

How to transform this pascal code into java code!

I want to transform this pascal code into java code . Please tel me how to do it because I really don't know how to do it!
Thanks!
{CALCULATE HOHN-LONDON FACTORS}
var kk:tab4;
PROCEDURE INTENS(var kk:tab4);
begin
for n:=0 to nr+2 do
begin
kk^[1,n]:=sqrt(lup*lup*yg*(yg-4)+4*sqr(n+1)) +lup*(yg-2);
kk^[2,n]:= sqrt(lup*lup*yg*(yg-4)+4*sqr(n+1))-lup*(yg-2);
kk^[3,n]:=0.5*(kk^[1,n]*kk^[1,n]+4*(sqr(n+1)-lup*lup));
kk^[4,n]:= 0.5*(kk^[2,n]*kk^[2,n]+4*(sqr(n+1)-lup*lup));
kk^[5,n]:= sqrt(ldown*ldown*yd*(yd-4)+4*sqr(n+1)) +ldown*(yd-2);
end;
end;
BEGIN
new (kk);
intens(kk);
writeln(f2,' ','N ','V','branch ','H-L');
for n:=1 to np do
begin
fp1[n,v]:=(n-ldown)*(n+ldown+1)*sqr(kk^[2,n-1]*kk^[6,n]+4*(n+ldown)*(n-ldown+1));
fp1[n,v]:=fp1[n,v]/(4*(n+0.5)*kk^[4,n-1]*kk^[8,n]) ;
writeln(f2,' ',n,' ',v,' fp1 ',fp1[n,v]:10:2);
end;
for n:=1 to nq do
begin
fq1[n,v]:=sqr(kk^[2,n]*kk^[6,n]*(ldown+0.5)+4*(n-ldown+1)*(n+ldown+1)*(ldown-0.5)) ;
fq1[n,v]:=fq1[n,v]/(2*(n+0.5)*kk^[4,n]*kk^[8,n]*(n+1.5));
fq1[n,v]:=fq1[n,v]*(n+1);
writeln(f2,' ',n,' ',v,' fq1 ',fq1[n,v]:10:2);
end;
for n:=1 to nr do
begin
fr1[n,v]:=sqr(kk^[2,n+1]*kk^[6,n]+4*(n-ldown+2)*(n+ldown+1));
fr1[n,v]:=fr1[n,v]/(4*kk^[4,n+1]*kk^[8,n]*(n+1.5));
fr1[n,v]:=fr1[n,v]*(n-ldown+1)*(n+ldown+2) ;
writeln(f2,' ',n,' ',v,' fr1 ',fr1[n,v]:10:2);
end;

Basically it looks like this:
public class KK{
     private your_type[][] kk = new your_type[length][length];
     private void intens(your_type[] kk){
          for(int n= 0; n<nr+2; n++){
               kk[1][n] = Math.sqrt(lup*lup*yg*(yg-4)+4*Math.pow((n+1), 2)) +lup*(yg-2);
               kk[2][n] = Math.sqrt(lup*lup*yg*(yg-4)+4*Math.pow((n+1), 2))-lup*(yg-2);
               kk[3][n] = 0.5*(kk[1][n]*kk[1][n]+4*(Math.pow((n+1), 2)-lup*lup));
               kk[4][n] = 0.5*(kk[2][n]*kk[2][n]+4*(Math.pow((n+1), 2)-lup*lup));
               kk[5][n] = Math.sqrt(ldown*ldown*yd*(yd-4)+4*Math.pow((n+1), 2)) +ldown*(yd-2);
     public static void main(String args[]){
          KK k = new KK();
          k.intens(kk);
          System.out.println(f2 + ' ' + 'N ' + 'V' + 'branch ' + 'H-L');
          for(int n=1; n < np; n++){
               fp1[n][v] = (n-ldown)*(n+ldown+1)*Math.pow((kk[2][n-1]*kk[6][n]+4*(n+ldown)*(n-ldown+1)), 2);
               fp1[n][v] = fp1[n][v]/(4*(n+0.5)*kk[4][n-1]*kk[8][n]) ;
               System.out.println(f2 + ' ' + n + ' ' + v + ' fp1 ' + fp1[n][v]:10:2);
          for(int n=1; n< nq;n++){
               fq1[n][v] = Math.pow((kk[2][n]*kk[6][n]*(ldown+0.5)+4*(n-ldown+1)*(n+ldown+1)*(ldown-0.5)), 2);
               fq1[n][v] = fq1[n][v]/(2*(n+0.5)*kk[4][n]*kk[8][n]*(n+1.5));
               fq1[n][v] = fq1[n][v]*(n+1);
               System.out.println(f2 + ' ' + n + ' ' + v + ' fq1 ' + fq1[n][v]:10:2);
          for(int n=1; n < nr; n++){
               fr1[n][v] = Math.pow((kk[2][n+1]*kk[6][n]+4*(n-ldown+2)*(n+ldown+1)), 2);
               fr1[n][v] = fr1[n][v]/(4*kk[4][n+1]*kk[8][n]*(n+1.5));
               fr1[n][v] = fr1[n][v]*(n-ldown+1)*(n+ldown+2) ;
               System.out.println(f2 + ' ' + n + ' ' + v + ' fr1 ' + fr1[n][v]:10:2); //fr1[n][v]:10:2 --> Here you must use the BigDecimal class
}I'm not very sure because my pascal knowledge is extremely "dated".
What about the converter I told you about?

How to convert Vb code into java?

Hi,
I want to know how to make conversion a visual basic source code into java. The conversion could be (1:1) scale.
Is there any compilers making the live easier (solving this problem) ?
Thank you all.
Abu_ramla

Use the JNI. VB doesent actually do anything on its own. Its just a series of calls on COM objects to performs all its work. You can call these same COM objects using the Java Native Interface or JNI. You wont have access to things designed in VB though like forms, you will have to redesign those.
This will take extensive knowledge of COM, VB, Java, and JNI. It will take you about 1 year to get up to speed. I would say to not do this.

Viewing code in Java classes

Hello all,
I'm new to this forum, so first I'll say Hello.
I'm a CS student taking my first Java class, and I'm trying to figure out how to view code for certain Java classes and methods; in particular, I want to view the actual code for the g.drawString, g.drawRect, g.setColor, ect... methods. Where do we go to view the actual code for these methods. I find it very frustratingto learn how to use these methods, and yet not to be able to see the actual code that executes them.

Hello all,
I'm new to this forum, so first I'll say Hello.
I'm a CS student taking my first Java class, and I'm
trying to figure out how to view code for certain
Java classes and methods; in particular, I want to
view the actual code for the g.drawString,
g.drawRect, g.setColor, ect... methods. Where do we
go to view the actual code for these methods. I find
it very frustratingto learn how to use these methods,
and yet not to be able to see the actual code that
executes them.First thing you should know is that not all code is open-source. You are rarely going to get the source code with libraries and other such items.
Second, you can always read the JavaDocs provided on this site.
http://java.sun.com/reference/api/
API documentation is much more informative (often times) than reading the source code itself.
Third, the JDK ships with the source code. You can also get copies of the source code from java.net by enrolling in one of the programs and agreeing to the terms and conditions provided therein.

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