Phonebook

[Daniel Soliba]

Thanks for the help the other time now i am really confident in creating my programs but here is one that i cannot finish.
I am having an infinite loop on it and i dont know how to stop it. Can you please give me some things to do with it, tips, or whatever. Just things that can help. Thanks again here is my code:

    
import java .io .*;
import java .util .*;
import java.awt.event.*;



public class phone
{
    public void new_record()
    {
       String id,name,city,add,number,total,list;
         boolean bln=false;
              try
        {
          Properties pr=new Properties();
          FileInputStream fin=new FileInputStream("phone.dat");
           if(fin!=null)
             {
             pr.load(fin);
             }
            BufferedReader br1=new BufferedReader (new InputStreamReader(System.in));
              FileOutputStream fout=new  FileOutputStream("phone.dat");
                  for(;;)
                   {
                     System.out .println("Enter the 'ID', 'q' for quit:");
               id=br1.readLine().toUpperCase();
                     bln=pr.containsKey(id);
                      System.out .println("FLag"+bln);
                     if(bln)
                      {
                       System.out.println("ID id already exists, Please Enter another ID:");
                       continue;
                      }
                    if((id.toUpperCase()).equals("Q"))
                    break;
                    System.out.println("enter name:");
              name=br1.readLine().toUpperCase();
              System.out.println("enter Phone number:");
              number=br1.readLine().toUpperCase();
                System.out.println("enter address:");
              add=br1.readLine().toUpperCase();
              System.out.println("enter city:");
              city=br1.readLine().toUpperCase();
              total="    Name="+name+","+"Phone no="+number+","+" Address="+add+","+"    City="+city;
                    total=total.toUpperCase();
              pr.put(id,total);
              pr.store(fout,"My Telephone Book");
                 }
              fout.close();
        }
          catch(Exception e)
          {
                System.out.println(e);
          }
    }

    public void display_record()
    {
        String id="";
        String total="";
                int x=1;
        try
        {
            FileInputStream fin=new FileInputStream("phone.dat");
            Properties pr1=new Properties();
            pr1.load(fin);
            Enumeration enum1=pr1.keys();
            while(enum1.hasMoreElements())
            {
              id=enum1.nextElement().toString();
              total=pr1.get(id).toString();
              StringTokenizer stk=new StringTokenizer(total,"=,");
                          System.out .println("RECORD ::"+x+"\n");
                          x++;
              while(stk.hasMoreTokens())
              {
                  String key=stk.nextToken();
                  String value=stk.nextToken();
                  System.out.println("\t"+key+"::\t\t::"+value);
                                   try
                                     {
                                       Thread.sleep(1500);
                                     }
                                      catch(Exception e){}
              }
                          System.out.println("");
                          System.out.println("");
            }
             fin.close();
        }
        catch(Exception e){}
    }
         public void display_by_name()
          {
            String name="",id,total;
            String key[]=new String[4];
            String value[]=new String[4];
            int i=0;

        System.out.println("Enter Name For Searching Record :-");
        try
        {
            BufferedReader br=new BufferedReader(new InputStreamReader(System.in));
                  name=br.readLine().toUpperCase();
                  FileInputStream fin=new FileInputStream("phone.dat");
            Properties pr1=new Properties();
            pr1.load(fin);
            Enumeration enum1=pr1.keys();
            while(enum1.hasMoreElements())
            {
              id=enum1.nextElement().toString();
              total=pr1.get(id).toString();
              StringTokenizer stk=new StringTokenizer(total,"=,");

                     while(stk.hasMoreTokens())
              {

                         for(i=0;i<4;i++)
                         {
                           key[i]=stk.nextToken();
                           value[i]=stk.nextToken();
                         }
                           if(value[0].equals(name))
                            {
                              for(i=0;i<4;i++)
                               {
                                 System.out.println("\t"+key[i]+":"+value[i]);
                                try
                                     {
                                       Thread.sleep(1500);
                                     }
                                      catch(Exception e){}
                               }


                            }
              }
                      System.out.println("");


            }
             fin.close();
        }
        catch(Exception e){
            System.out.println(e);
            }
}

public void display_by_city()
{
    String city="",id,total;
    String key2[]=new String[4];
    String value2[]=new String[4];
    int i=0;

             System.out.println("Enter City For Searching Record :-");
          try
        {
            BufferedReader br=new BufferedReader(new InputStreamReader(System.in));
                  city=br.readLine().toUpperCase();
                  FileInputStream fin=new FileInputStream("phone.dat");
            Properties pr1=new Properties();
            pr1.load(fin);
            Enumeration enum1=pr1.keys();
            while(enum1.hasMoreElements())
            {
              id=enum1.nextElement().toString();
              total=pr1.get(id).toString();
              StringTokenizer stk=new StringTokenizer(total,"=,");

              while(stk.hasMoreTokens())
              {
                   key2[i]=stk.nextToken();
                           value2[i]=stk.nextToken();
                         // System.out.println("aaaaaaaaaaaaaaa"+value2[i]);
                         if(i==3)
                          {
                           if(value2[i].equals(city))
                            {
                              for(int j=0;j<4;j++)
                               {
                                 System.out.println("\t"+key2[j]+":\t"+value2[j]);
                                 try
                                     {
                                       Thread.sleep(1500);
                                     }
                                      catch(Exception e){}

                               }
                            }
                          }
                         i++;
                         if(i>3)
                           i=0;
              }
                          System.out.println("");
                          System.out.println("");
            }
             fin.close();
        }
        catch(Exception e){
            System.out.println(e);
            }


   }

public void display_record_first_letter()
{

    String name="",id,total,str="";
    String key2[]=new String[4];
    String[] value2=new String[4];
    int i=0;


        try
        {
            BufferedReader br=new BufferedReader(new InputStreamReader(System.in));
                  System.out.println("        Enter The First Letter Of any Name:");
                  name=br.readLine();
                  name=name.substring(0,1).toUpperCase();
                  FileInputStream fin=new FileInputStream("phone.dat");
            Properties pr1=new Properties();
            pr1.load(fin);
            Enumeration enum1=pr1.keys();
            while(enum1.hasMoreElements())
            {
              id=enum1.nextElement().toString();
              total=pr1.get(id).toString();
              StringTokenizer stk=new StringTokenizer(total,"=,");

                     while(stk.hasMoreTokens())
              {

                           for(i=0;i<4;i++)
                           {
                           key2[i]=stk.nextToken();
                           value2[i]=stk.nextToken();
                          }
                          str=value2[0].substring(0,1);

                           if(str.equals(name))
                            {
                             for(i=0;i<4;i++)
                              {
                                System.out.println("\t"+key2[i]+":\t"+value2[i]);
                                try
                                     {
                                       Thread.sleep(1500);
                                     }
                                      catch(Exception e){}
                            }
                          }

              }
                          System.out.println("");
                          System.out.println("");



            }
             fin.close();
        }
        catch(Exception e){
            System.out.println(e);
            }
}
     public void replace_record()
      {
           String id,name,city,add,number,total,list;
         boolean bln=false;
              try
        {
          Properties pr=new Properties();
          FileInputStream fin=new FileInputStream("phone.dat");
           if(fin!=null)
             {
             pr.load(fin);
             }
            BufferedReader br1=new BufferedReader (new InputStreamReader(System.in));
              FileOutputStream fout=new  FileOutputStream("phone.dat");
                  for(;;)
                   {
                     System.out .println("Enter the 'ID', 'q' for quit:");
               id=br1.readLine().toUpperCase();
                     if((id.toUpperCase()).equals("Q"))
                    break;

                     bln=pr.containsKey(id);
                     if(bln)
                      {
                       System.out.println("ID id already exists, ");


                    System.out.println("enter name:");
              name=br1.readLine().toUpperCase();
              System.out.println("enter Phone number:");
              number=br1.readLine().toUpperCase();
                System.out.println("enter address:");
              add=br1.readLine().toUpperCase();
              System.out.println("enter city:");
              city=br1.readLine().toUpperCase();
              total="    Name="+name+","+"Phone no="+number+","+" Address="+add+","+"    City="+city;
                    total=total.toUpperCase();
              pr.put(id,total);
              pr.store(fout,"My Telephone Book");
                 }
                    else
                         {
                           System.out.println("ID does'nt Exists, Please Enter A Valid ID:");
                           continue;
                         }

               }
             pr.store(fout,"My Phone Book");
                   fout.close();
        }
          catch(Exception e)
          {
                System.out.println(e);
          }
    }
   public void delete_record()
   {

   String id="";
         boolean bln=false;
              try
        {
          Properties pr1=new Properties();
          FileInputStream fin=new FileInputStream("phone.dat");
          if(fin!=null)
            pr1.load(fin);

            BufferedReader br1=new BufferedReader (new InputStreamReader(System.in));
              FileOutputStream fout=new  FileOutputStream("phone.dat");
                  for(;;)
                   {
                     System.out .println("Enter the 'ID', 'q' for quit:");
               id=br1.readLine().toUpperCase();
                     if((id.toUpperCase()).equals("Q"))


                        break;

                     bln=pr1.containsKey(id);

                     if(bln)
                      {
                       System.out.println("ID  exists :");
                       String str=pr1.remove(id).toString();
                       pr1.store(fout,"My Phone Book");
                       try
                                     {
                                       Thread.sleep(1500);
                                     }
                                      catch(Exception e){}
                      System.out.println("Record deleted successfully");
                      }
                        else
                         {
                           System.out.println("Enter Existing ID:");
                            pr1.store(fout,"My Phone Book");
                         }

                  }
              pr1.store(fout,"My Phone Book");
                    fin.close();
                    fout.close();
        }
          catch(Exception e)
          {
                System.out.println(e);
          }
    }




public void menu()
           {
        char ch=30;
            char ch1=31;
            int l;
            for(int i=0;i<27;i++)
            {
              System.out.print(" ");
            }
            for(l=0;l<2;l++)
           {

            for(int j=0;j<38;j++)
            {

              System.out.print(ch);
            }
              System.out.println("");
               for(int k=0;k<27;k++)
            {
              System.out.print(" ");
            }
          }
            System.out.print(ch);
            System.out.print(ch1);
            for(int i=0;i<34;i++)
            System.out.print(" ");
            System.out.print(ch);
            System.out.print(ch1);
            System.out.println("");
            for(int i=0;i<27;i++)
            System.out.print(" ");

            System.out.print(ch);
            System.out.print(ch1+" ");
            System.out.print (" 1. Enter new Record:           ");

            System.out.print(" "+ch);
            System.out.println(ch1+" ");

            for(int i=0;i<26;i++)
            System.out.print(" ");
            System.out.print(" "+ch1);
            System.out.print(ch+" ");


        System.out.print (" 2. Display All Record:         ");
            System.out.print(" "+ch);
            System.out.println(ch1+" ");


            for(int i=0;i<26;i++)
            System.out.print(" ");
            System.out.print(" "+ch);
            System.out.print(ch1+" ");


        System.out.print (" 3. Search Record by name:      ");
            System.out.print(" "+ch);
            System.out.println(ch1+" ");


            for(int i=0;i<26;i++)
            System.out.print(" ");
            System.out.print(" "+ch);
            System.out.print(ch1+" ");

        System.out.print (" 4. Search Record by city:      ");
            System.out.print(" "+ch);
            System.out.println(ch1+" ");


            for(int i=0;i<26;i++)
            System.out.print(" ");
            System.out.print(" "+ch);
            System.out.print(ch1+" ");


        System.out.print (" 5. Search Record by 1st letter:");
            System.out.print(" "+ch);
            System.out.println(ch1+" ");


            for(int i=0;i<26;i++)
            System.out.print(" ");
            System.out.print(" "+ch);
            System.out.print(ch1+" ");


            System.out .print(" 6. Replace Record:             ");
            System.out.print(" "+ch);
            System.out.println(ch1+" ");


            for(int i=0;i<26;i++)
            System.out.print(" ");
            System.out.print(" "+ch);
            System.out.print(ch1+" ");


        System.out .print(" 7. Delete Record:              ");
            System.out.print(" "+ch);
            System.out.println(ch1+" ");


            for(int i=0;i<26;i++)
            System.out.print(" ");
            System.out.print(" "+ch);
            System.out.print(ch1+" ");


        System.out .print(" 8. Exit:                       ");
            System.out.print(" "+ch);
            System.out.println(ch1+" ");


            for(int j=0;j<27;j++)
            System.out.print(" ");
            System.out.print(ch);
            System.out.print(ch1);
            for(int i=0;i<34;i++)
            System.out.print(" ");
            System.out.print(ch);
            System.out.print(ch1);
            System.out.println("");
            for(int i=0;i<27;i++)
            System.out.print(" ");
            for(int i=0;i<38;i++)
            System.out.print(ch);
            System.out.println("");
            for(int i=0;i<27;i++)
            System.out.print(" ");
            for(int i=0;i<38;i++)
            System.out.print(ch);

           }

        public static void main (String[] args)
    {
        phone cl=new phone();
            BufferedReader br;


        for(;;)

         {


             {
            try
        {

            cl.menu();
        br=new BufferedReader (new InputStreamReader(System.in));
        System.out.print(" &");

        }
        }
        }
}

[Joe Ess]

You would do well to read our FAQ, HowToAskQuestionsOnJavaRanch. The better question you ask, the more help we can be. For example, Use Code Tags, they preserve the formatting of your code so it is easier to read. Next, consider Isolating the Problem. We are all volunteers here and few of us have the time to read through all that code to find your problem.