Help me!! how to merge 3 different program into one

Question

hi all,
i'm having trouble to merge 3 program and then make them run in while loop. i think all those 3 program can be make into class and the switch control them;
for example:
1)choice 1
it goes to the first class
2)choice 2
it goes to second class
3)choice 3
it goes to third class
below are the mentioned program
-----------------first program---------------------------------------
import java.util.Hashtable;
public class GraphToSet1 {
run GraphToSet to get the output from Graph.java and GraphToJava.java
     public static void main(String[] argv) {
     int graph[][] = {
               { 1, 2 }, //graph are repsented in matrix form
               { 2, 3 },
               { 3, 4 },
{ 4, 5},
{ 5, 1 },
          Graph.convert(graph); //convert the graph into matrix by calling the function
//convert() from Graph.java
class Graph {
this function will convert graph that it get fom GraphToSet.java to set
public static void convert(int[][] a) {
int total_rows = a.length;
     int total_cols = a[0].length;
     System.out.println("Graph in matrix form["+total_rows+"]["+total_cols+"] = "); //Displaying the graph in matrix form
for (int rows=0; rows<total_rows; rows++)
          System.out.print("{");
          for (int cols=0; cols<total_cols; cols++)
          System.out.print(" " + a[rows][cols] + ",");
          System.out.println("},");
/* Start of Modified Code */
Hashtable num=new Hashtable(); // New Code
String value=""; // New Code
System.out.println("\nG=(V,E)");
System.out.print("G=({");
for (int k=1; k<=total_rows; k++)
value=String.valueOf(k);
num.put(value,value);
for (int k=1; k<=total_rows; k++)
System.out.print(" "+ (String)num.get(String.valueOf(k))+ ",");
System.out.print(")");
for (int i=0; i<total_rows; i++)
System.out.print("(");
for (int j=0; j<total_cols; j++) //retrieving all the edges from GraphToSet.java
System.out.print(" " + a[i][j]+","); //and print it out
System.out.print(")");
System.out.println("})"); //final output for graph to set
import java.io.*;
import java.util.*;
* Read and print, using BufferedReader from System.in, onto System.out
public class AlgebraToSet {
public static void main(String[] av) {
try {
BufferedReader is = new BufferedReader(new InputStreamReader(System.in));
System.out.println("Insert the element for algebra :");
System.out.print("\tSet of elements (U) = ");
String inputLine1=is.readLine();
System.out.print("\tOperation over element (Op) = ");
String inputLine2=is.readLine();
System.out.print("\tRelation over element(Rel) = ");
String inputLine3=is.readLine();
System.out.println("Algebra in set form = "+"{"+inputLine1+","+""+inputLine2+","+""+inputLine3+"}");
is.close();
} catch (IOException e) {
System.out.println("IOException: " + e);
public class PairToSet {
pair that need to be transform has to be keyed in here
     public static void main(String[] argv) {
     int pair[][] = {
               { 34,56 }, //pair represented as matrix
          Pair.convert(pair); //converting pair into set by calling mprint() function
//from Pair.java
class Pair {
this function will convert pair that it get fom PairToSet.java to set
     public static void convert(int[][] a) {
          int total_rows = a.length;
          int total_cols = a[0].length;
          System.out.print("Pair = ");
for (int rows=0; rows<total_rows; rows++)
               System.out.print("\t\t[");
               for (int cols=0; cols<total_cols; cols++)
                    System.out.print(" " + a[rows][cols] + ", ");
               System.out.println("]"); //displaying the pair from PairToSer.java
System.out.print("Pair in Set Form =");
               System.out.print("\t{");
                    System.out.print("{" + a[0][0] + "},"); //converting the pair to set by applying array method
System.out.print("{" + a[0][0] + "," + a[0][1] + "}");
               System.out.println("}");

Answer 1

it is possible but u cant do it. as u have posted 3 posts while u can get answer in one.so keep trying thre3 application independently.grrr