File load and save errors???

Question

hi,i'am unable to get my file to oad and save in this class.i get 5 errors 1."Exception java.io.FileNotFoundEception must be caught or be declared in the throws clause" 2."Incompatible type for constructor.Cant convert java.io.FileInputStream to java.util.Properties" 3."Undefined variable: FileInputStream" 4."Variable 'p' is already defined in this method" 5. Incompatible type for constructor.cant covert java.io.FileInputStream to java.util.Properties.can someone please show me how to change this so it will compile and work?thanks
import cs1.Keyboard;
import publication;
import java.util.*;
import java.io.*;
public class publicationmain
public static void main(String args[])
PublicationContainer pubdatabase = new PublicationContainer();
int userchoice;
boolean flag = false;
while (flag == false)
File file = new File("publicationsList.txt");
//1st error on line below
FileInputStream inputStream = new FileInputStream(file);
//2nd error here
Properties p = new Properties(inputStream);
String myPublicationID = p.getProperty("PublicationID", defaultValue);
System.out.println("------------------------------------Publications--------------------------------");
System.out.println();
System.out.println("please Make a Selection");
System.out.println();
System.out.println("1 to add publication");
System.out.println("2 to delete publication");
System.out.println("0 to quit");     
System.out.println("3 to View all publications");
System.out.println("4 to Edit a publication");
System.out.println();
userchoice = Keyboard.readInt();
switch (userchoice)     
case 1:
String PubName;
String PricePerIssue;
String Publisher;
String Pubstatus;
String Pubtype;
int PubID;
System.out.println ("Enter Publication ID:");
PubID = Keyboard.readInt();
System.out.println("Enter Publication Name:");
PubName = Keyboard.readString();
System.out.println("Enter Publisher Name");
Publisher = Keyboard.readString();
System.out.println("Enter Price per Issue:");
PricePerIssue = Keyboard.readString();
System.out.println("Enter Publication status");
Pubstatus = Keyboard.readString();
System.out.println("Enter Publication type:");
Pubtype = Keyboard.readString();
pubdatabase.add (new publication(PubID, PubName, Publisher, PricePerIssue, Pubstatus, Pubtype));
break;
case 0:
//3rd error here
FileInputStream = new FileInputStream(file);
//4th and 5th error here
Properties p = new Properties(inputStream);
p.put("PublicationID", PubID);
p.put("PublicationName", PubName);
p.put("PublisherName" , Publisher);
p.put("PriceperIssue" , PricePerIssue);
p.put("PublicationStatus" , Pubstatus);
p.put("PublicationType" , Pubtype);
p.store(outputStream, "My Header");
flag = true;
case 2:
System.out.println ("Enter Publication ID:");
PubID = Keyboard.readInt();
pubdatabase.remove (PubID);
System.out.println ("publication: "+(PubID)+" removed");
System.out.println();
break;
case 3:
System.out.println (pubdatabase);
break;
case 4:
System.out.println ("Enter Publication to be edited by Publication ID: ");
PubID = Keyboard.readInt();
pubdatabase.remove (PubID);
String PubName1;
String PricePerIssue1;     
String Publisher1;
String Pubstatus1;
String Pubtype1;
int PubID1;
System.out.println ("Enter Publication ID:");
PubID1 = Keyboard.readInt();
System.out.println("Enter Publication Name:");
PubName1 = Keyboard.readString();
System.out.println("Enter Publisher Name");
Publisher1 = Keyboard.readString();
System.out.println("Enter Price per Issue:");
PricePerIssue1 = Keyboard.readString();
System.out.println("Enter Publication status");
Pubstatus1 = Keyboard.readString();
System.out.println("Enter Publication type:");
Pubtype1 = Keyboard.readString();
pubdatabase.add (new publication(PubID1, PubName1, Publisher1, PricePerIssue1, Pubstatus1, Pubtype1));
break;
default:
System.out.println("Incorrect Entry");
}

Answer 1

i'm sorry to ask this, but how long are you programming in java ? not so long, right ?
maybe you should first learn how the syntax in java is. maybe you should take a look at the java tutorial.
the errors you get are simple, so normally you should be able to solve these problems yourself.
and, if you want to post another message with the same topic, please use the already existing (started by you) threads like
http://forum.java.sun.com/thread.jsp?forum=31&thread=230202
or
http://forum.java.sun.com/thread.jsp?forum=31&thread=230185
you can reply to your postings. you do not need to start a new thread.
tobias