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Siba mishra
Problems in Stringtokenizer
0 Answer(s)      2 years and a month ago
Posted in : Design concepts & design patterns


here is my code

import java.util.*;
import java.util.Scanner;
class Node
public boolean marked;
public int node_no;
public String node_type;
//public float value;
//public float control_value;
public  String usevar[];
public String defvar[];
public int child[];
public int par[];
public int actIn[];
public int actOut[];
public int advice;
public class Input
public int n,nn,vn;                                 //vn total no of variables,    n total no of node ,nn  node no.
public int i,use_var,def_var,p_c,c_c;               //
public String c,f,var_nam[];
public Node node[];
StringTokenizer str,str1;
Input() throws Exception
FileReader df=new FileReader("Input.txt");
Scanner fr=new Scanner(df);
str=new StringTokenizer(fr.nextLine(),"$");
this.n=Integer.parseInt(str.nextToken());        //total no of nodes;       //toal no of variables
var_nam=new String[vn];                         //for total variables
str=new StringTokenizer(fr.nextLine(),"$");
for(int i=0;i<vn;i++)
String a=str.nextToken();
node=new Node[n+1];
for(int i=1;i<=n;i++)
node[i]=new Node();
    str=new StringTokenizer(c,"$");                         //node no is parsed
    node[i].node_no=nn;                                 //node no is assigned

    str1=new StringTokenizer(str.nextToken()," ");
   use_var=str1.countTokens();                              // no of use var
   node[i].usevar=new String[use_var];  
   for(int j=0;j<use_var;j++)
for(int j=0;j<use_var;j++)

    str1=new StringTokenizer(str.nextToken()," ");      // for def var
    node[i].defvar=new String[def_var];
     for(int j=0;j<def_var;j++)
        for(int j=0;j<def_var;j++)

str1=new StringTokenizer(str.nextToken()," ");          // parents node info
node[i].par=new int[p_c];
     for(int j=0;j<p_c;j++)
         for(int j=0;j<p_c;j++)

str1=new StringTokenizer(str.nextToken()," ");          // child node info
node[i].child=new int[c_c];
     for(int j=0;j<c_c;j++)
        for(int j=0;j<c_c;j++)
        node[i].node_type=str.nextToken();   // node type
        int temp=Integer.parseInt(str.nextToken());
        node[i].actIn= new int[temp];
        str1=new StringTokenizer(str.nextToken()," ");
        for(int  temp1=0;str1.hasMoreTokens();temp1++)
        node[i].actIn[temp1]=Integer.parseInt(str1.nextToken());        //total actIn are Obtained
         node[i].actOut= new int[temp];
        str1=new StringTokenizer(str.nextToken()," ");
        for(int  temp1=0;str1.hasMoreTokens();temp1++)
        node[i].actOut[temp1]=Integer.parseInt(str1.nextToken());                  //total actOut are Obtained
            node[i].advice=Integer.parseInt(str.nextToken());                   //advice vertex if not then simply put zero

i++;                                                                            //next node

public static void main(String args[])throws Exception
Input i=new Input();
System.out.println("\nnew main\n");
for(int k=1;k<=i.n;k++)
//System.out.println("\nnew main\n");
System.out.print(i.node[k].node_no+" a121a ");
for(int j=0;j<i.node[k].usevar.length;j++)
System.out.print(i.node[k].usevar[j]+" ");
for(int j=0;j<i.node[k].defvar.length;j++)
System.out.print(i.node[k].defvar[j]+" ");
for(int j=0;j<i.node[k].child.length;j++)
System.out.print(i.node[k].child[j]+"  ");
for(int j=0;j<i.node[k].par.length;j++)
System.out.print(i.node[k].par[j]+"  ");
for(int j=0;j<i.node[k].actOut.length;j++)
System.out.print(i.node[k].actOut[j]+"  ");
for(int j=0;j<i.node[k].actIn.length;j++)
System.out.print(i.node[k].actIn[j]+"  ");
System.out.print(i.node[k].node_type+"  ");
System.out.println(" ");


When i am trying to compile the code i found the following error

Error: Exception in thread "main" java.util.NoSuchElementException at java.util.StringTokenizer.nextToken(Unknown Source) at Input.( at Input.main(

Actually this is an implementation of a slicing algorithm. The class specifies the Input to the program with the help of a text file. Below I am attaching the text file named Input.txt. the input file is too large in size. Please let me know more about the flaws.

58$$$$57$59 60$$$$$
6$7 33 34$7$59$7 8 9 10 12$$$$$$
33$34 6 7$34$60$67 34 35 36 37 38 39$$$$$$
7$8 15 34 35$7 34 $6$8$$$$$$
34$35 7 8$7 34$33$35$$$$$$
35$36 37 5 7 9 10 14 15$35$33 34$36 37$$$$$$
10$$8$6 8 9$11 14 17$$$$$$
8$9 10 14 15 35 36 37$8$6 7$10 15$$$$$$
9$$8 35$6 8$10 15$$$$$$
36$$8 35$33 35$37$$$$$$
37$$9 35$6 8$10 15$$$$$$
40$$$37 38 69$41 45 46 50$$$$$$
41$47 48 50 51 70 71 72 74$41$40$47 48$$$$$$
46$47 49 45$45$40$47 48 49 70$$$$$$
45$49 45 46$45$40$49$$$$$$
47$48 45 46 49$41$41 45$48 49$$$$$$
48$47 49 45 46 70 71 72 74$41$41 46 47 50 51$0$$$$$$
49$47 49 45 46$45$45 46 47$0$$$$$$
50$51 41 48$41$40$70 51 48$$$$$$
51$41 48 50 51 71 72 74 70$41$40 50 75$48$$$$$$
52$$$49$37 39$53 54 55 56$$$$$
54$56 27 28 29$54 27$52 27$56$$$$$$
55$56 28 29$55$52 28$56$$$$$$
56$53 54 55 27 28 29$53 54 55 27 28$52 53 54 55$0$$$$$$
12$$$6 24 66$13 16$$$$$$
13$15$13$12$14 15$$$$$$
14$8 9 10 15 14 35 36 37$8 35$10 13$15$sleep node$$$$$
15$8 9 10 13 14 15 35 36 37$8 35 13$8 9 13 14$16$$$$$$
16$$$12 15$0$$$$$$
17$$$$29 64 10$19 23 24$$$$$
23$23 24 25$$17$24$$$$$$
24$19 23 24 25$19$17 19 23$12 25$$$$$$
25$23 24 25$$24$65$$$$$$
26$$$11$27 28 29$$$$$$
27$29 54 56$27 54$26$29$$$$$$
28$29 55 56$28 55$26$29 55$$$$$$
29$27 28 29 54 55 56$27 28 54 55$26 27 28$17 62$$$$$$
62$$$29$63 65$pointcut vertex$$$$$
63$$$62$64$$$$$$ startingadvice vertex
65$$$25 62$66$$$$$$ startingadvice vertex
67$$$33$68 70$poincut vertex$$$$$
68$$$67$69$$$$$$ startingadvice vertex
70$71 72 74 41 48 50 70 51$41$46 50 67$71 75 f1_in$$1$f1_in$$$ startingadvice vertex
71$70 71 72 74 41 48 50 51$41$70$72 74$$$$$$
72$70 71 72 74 41 48 50 51$41$f1_in$0$$$$$$
74$70 71 72 74 41 48 50 51$41$71 f1_in$0$$$$$$

The algorithm is as follows:

import java.util.*;
class DynamicSlice 
String var_name;
int par[];
DynamicSlice(int n)
par=new int[n+1];   //no of nodes is=n
class Algo extends Input
    int zc=n+1;
DynamicSlice dn[][]=new DynamicSlice[zc][vn];
int rec_def[];
Algo() throws Exception
public void init()
rec_def =new int[vn];
for(int i=1;i<n+1;i++)
for(int j=0;j<vn;j++)
dn[i][j]=new DynamicSlice(n);
                                //set Dynamic slice is creATED
for(int i=1;i<n+1;i++)
for(int j=0;j<vn;j++)
//variable name is assigned to each position 

public int varat(String x) 
    for(int i=0;i<vn;i++)
return 0;
    }   // knowing the position of var in vaiable list
public void a2(int nodeno)
for(int l=0; l<node[nodeno].usevar.length;l++)
int index = varat(node[nodeno].usevar[l]);
for(int i=1;i<n+1;i++){
int k=dn[nodeno][index].par[i];
for(int j=1;j<=n;j++)
public void call2a()
for(int i=1;i<=n;i++)
                /* 2 A over*/
                /* 2B starts */
public void call2b()
for(int i=1;i<=n;i++)
for(int j=0;j<node[i].defvar.length;j++)
    int index = varat(node[i].defvar[j]);            //index of def var in varnam list
    dn[i][index].par[i]=1;                        //dynamic slice updated

/* 2 C and 2 B over */

/* rest start*/
public void other()
for(int i=1;i<n+1;i++)
for(int j=0;j<node[i].actIn.length;j++)
for(int j=0;j<node[i].actOut.length;j++)
if(node[i].advice>0)                   //advice vertex is marked along with the formal in formal out
for(int j=0;j<node[node[i].advice].actIn.length;j++)
for(int j=0;j<node[node[i].advice].actOut.length;j++)

public void call3a()
System.out.println(" enter the var name and the  node no");
int sw,sq;
String arg;
Scanner scan=new Scanner(;;
sq=varat(arg);                          //index no of arg
for(int i=0;i<n;i++)

public static void main(String arg[]) throws Exception
//Input input=new Input();

Algo alg=new Algo();
System.out.println(" want to exit then enter 0");
Scanner scan=new Scanner(;
int i=scan.nextInt();
}/*end of main*/


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