Java Phone Book A console base java phone book program

[vicky99 0]

Hello everybody

I wrote this program a few months back when I wan learning JAVA.I haven't learned java yet though because its to vast.

The program is console based. It uses the util package of java in a great way. It keeps record in a flat file. You should create a Data file called phone.dat in same folder where phone.java is kept.

So here is the code:-(phone.java)

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(" &

Edited May 28, 2006 by vicky99 (see edit history)

[iGuest 3]

I need a console based application but the problem is half of the code is missing from the main method.-Rageeb

[iGuest 3]

Thanks my friend GOdBless�

Java Phone Book

 

Thank you very much!..

GODBLESS�

 

-jonathan

[iGuest 3]

is it working?Java Phone Book

I grab your program but when I run it it has a lot of errors 

-reply by jubal garlejo

[iGuest 3]

To (G)jubal garlejoJava Phone Book

you need to add imports to first line of your code ;

import java .Io .*;Import java .Util .*;Import java.Awt.Event.*; 

-reply by Ramiz

[iGuest 3]

Catch or Try and FinallyJava Phone Book

Hi I'm a computer programming student and I want to study your work so that I can create my own but then when I copied the program,, and created the DAT file as you instructed, I have a problem on the bottom part of the program in which the command TRY is underlined with red and it says there, try without finally or catch. I tried using finally or catch but I cannot debug it or fix it. Please tell me more what to do with it because I really need to learn programming. I know the concepts used in it but the program doesn't work at all. Do I need to create other files etc,,

 

Please reply me on my email because I may forgot this site.

THANK YOU VERY MUCH.

Daniel Clint M. Soliba

dsoliba@yahoo.Com

-reply by Daniel