Jul 25, 2008

Building An Address Book With Java
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Building An Address Book With Java

arijitsinha99
May 27 2006, 05:00 AM
Dear Friends
I am sharing a java program with all of u which I built a few years back. I guess it will help beginners. It uses java utill package to store data in a flat file.
The File Name-----phone.java
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(" Enter Your Choice :");
String choice=br.readLine();
if(choice.equals ("1"))
{
cl.new_record();
}
else if(choice.equals("2"))
{
cl.display_record();
}
else if(choice.equals("3"))
cl.display_by_name();
else if(choice.equals("4"))
{
cl.display_by_city();
}
else if(choice.equals("5"))
cl.display_record_first_letter();
else if(choice.equals("6"))
cl.replace_record();
else if(choice.equals("7"))
cl.delete_record();

else if(choice.equals("8"))
System.exit(0);
}
catch(Exception e){}
}


}
}


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Reply

sportytalk
Jun 1 2006, 10:29 AM
I don't really have a need for using a java programmed address book at the moment, but if I ever do need to use an address book or something similar, I will use this tutorial to get an address book up and running.

The code looks like the program's good, but it needs compiling before it becomes of any use. Have you got any examples of this application or somewhere where you can download the compiled file of this program?

Thanks for sharing this anyway, it'll be extremely useful to those who prefer to keep an address book of friends/relatives on their computers smile.gif


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