import Sav.*;
import java.io.*;
class WordSearch {
public static void main(String args[]) throws Exception {
	Association aSoft = new Association("Soft");
/** 
 * The aJavaTool and aSoft associations share one area of memory due to 
 * clone()
 */
	Association aJavaTool = (Association) aSoft.clone();
/**
 * The following code line sets a pass through "Java tool " for aJavaTool. 
 * By this means aJavaTool will an inassociation of aSoft.
 */
	aJavaTool.con("Java tool ");    
	aJavaTool.set("JDK").set("VisualJ++").set("JBuilder");
//aJavaTool = {"JDK", "VisualJ++", "JBuilder"}
//aSoft = {"Java tool JDK", "Java tool VisualJ++", "Java tool JBuilder"}
/**
 * The fix() method minds the initial route to value of the aJavaTool
 * association.
 */
aJavaTool.fix();
/**
 * The fragment declares "Article1.txt" file input for searching 
 * a word token contained in aJavaTool association.
 */
	String reference = "Article1.txt";
	InputStream input = new FileInputStream(reference);
	StreamTokenizer tokens = new StreamTokenizer(input);

	Concept cCurrent= null; //For the additional control
/** 
 * The while loop inspects all the input tokens till end of file (EOF) 
 * If concept of the current token string value (tokens.sval) is in 
 * aJavaTool, file name is connected with this concept by
 * PN.RELATION connection.
 */
	while (tokens.ttype != tokens.TT_EOF) {
		tokens.nextToken();
		if (tokens.ttype != tokens.TT_WORD) continue;
		Concept c = aJavaTool.get(tokens.sval);
		if (c == null) continue;
		aJavaTool.con(c).con(PN.RELATION);	
		aJavaTool.set(reference);  
/** 
 * Restores the initial pass of the aJavaTool, we fixed by fix() method before.
 */
		aJavaTool.regain();  
/** 
 * The following line stores memory content of the aSoft and respectively
 * aJavaTool. It is useful for keeping and freeing the operating memory. 
 * Every association is saved in a file with a ".ass" extension and 
 * a corresponding name ("Soft"), "Temporary.ass" by default if association
 * was created with a "new Association()" code text. If the operating 
 * memory is enough, a save() method allows only to save. 
 */
		aSoft.store();
		cCurrent= c;
	}

/* Additional control of the current concept */
	if (cCurrent!= null) {
		System.out.println("REFERENCE FOR " + cCurrent.getName() + ", ...");
		aJavaTool.con(cCurrent).con(PN.RELATION);
		Concept cReference = aJavaTool.getFirst();
		while (cReference != null) {
		    System.out.println(cReference.getName());
		    cReference = aJavaTool.getNext();
		}
        	aJavaTool.regain();
		System.out.println("\nPress ENTER to finish.");
		System.in.read();
	}
}//main()
}//WordSearch