how to execute a jacop?

Replies

• 

  Manish Goyal

  Sory didn't get you
  what do you mean by java constraint program?
• 

  Reya

  The constraint programming approach is to search for the values of all the unknown variables in which the large no of constraints should be satisfied at the same time.JaCoP library provides
  the constraint programming implemeted in java..And so it is called as java constraint program.
• 

  Manish Goyal

  have you set the class path?
• 

  Reya

  what for class path here?do v have to mention the class path in netbeans?
• 

  Reya

  I have included the JaCoP library in netbeans..But still i get the error in the first line(import JaCoP -3.0-RC1.*; )of my prog.
• 

  Manish Goyal

  Tell me exactly the error message it is showing ,if it is showing message like
  
  package doesnot exist then I think there is problem related to classpath otherwise there may be some syntax related problem
  
  Try this
  import JaCop.*;
  or import JaCop.core.*;
• 

  Reya

  i didnt get the error as package doesnt exists..
  
  import JaCoP-3.0-RC1.*;
  import java.util.*;
  public class Main {
  static Main m = new Main ();
  public static void main (String[] args) {
  FDstore store = new FDstore(); // define FD store
  int size = 4;
  // define FDVs
  FDV[] v = new FDV[size];
  for (int i=0; i v = new FDV(store, "v"+i, 1, size);
  // define constraints
  store.impose( new XneqY(v[0], v[1]) );
  store.impose( new XneqY(v[0], v[2]) );
  store.impose( new XneqY(v[1], v[2]) );
  store.impose( new XneqY(v[1], v[3]) );
  store.impose( new XneqY(v[2], v[3]) );
  // search for a solution and print results
  ArrayList list = new ArrayList();
  for(FDV var : v) list.add(var);
  boolean result = Solver.searchOne(store, list, new SearchOne(),new IndomainMin(), new Delete());
  if ( result )
  System.out.println("Solution: " + list + "\n*** Yes");
  else
  System.out.println("*** No");
  }
  }
  
  error message:
  
  E:\Documents and Settings\SSN\My Documents\NetBeansProjects\JavaApplication15\src\javaapplication15\Main.java:8: '.' expected
  import JaCoP-3.0-RC1.*;
  E:\Documents and Settings\SSN\My Documents\NetBeansProjects\JavaApplication15\src\javaapplication15\Main.java:8: expected
  import JaCoP-3.0-RC1.*;
  2 errors
  E:\Documents and Settings\SSN\My Documents\NetBeansProjects\JavaApplication15\nbproject\build-impl.xml:413: The following error occurred while executing this line:
  E:\Documents and Settings\SSN\My Documents\NetBeansProjects\JavaApplication15\nbproject\build-impl.xml:199: Compile failed; see the compiler error output for details.
  BUILD FAILED (total time: 0 seconds)
  
  where that dot should come in the first statement?i could not recognise..
• 

  Reya

  can anyone help me?
• 

  Manish Goyal

  I don't have any idea about syntax and classes of JaCop library
  
  So i picked a program from net and it is working fine on my PC
  check whether the code that i given below is working fine or not
  
  if not then the problem is with class path
  
  

  import JaCoP.core.*; 
  import JaCoP.constraints.*; 
  import JaCoP.search.*; 
   
  public class Main { 
   
      static Main m = new Main (); 
   
      public static void main (String[] args) { 
          Store store = new Store();  // define FD store 
          int size = 4; 
          // define finite domain variables 
          IntVar[] v = new IntVar[size]; 
          for (int i=0; i search = new DepthFirstSearch(); 
          SelectChoicePoint select = 
              new InputOrderSelect(store, v, 
                                           new IndomainMin()); 
          boolean result = search.labeling(store, select); 
   
          if ( result ) 
              System.out.println("Solution: " + v[0]+", "+v[1] +", "+ 
                                                v[2] +", "+v[3]); 
          else 
              System.out.println("*** No"); 
      } 
  }            T

• 

  Reya

  working perfectly😀thank u so much dear😀