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Thread: phone book code problems

  1. #1
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    Default phone book code problems

    THE CODE IS SUPPOSE TO PROMPT USER TO MAKE A SELECTION BY ENTERING X,Y,Z.
    THEN IF X IS ENTERED- IT SEARCHES FOR NAME IN THE TEXTFILE phonebook.txt.
    Y IS FOR EDITING THE NAMES AND Z FOR ADDING A DIFFERENT NAME


    package phonebook ;
    import java.io.InputStreamReader;
    import java.util.ArrayList;
    import java.util.List;
    import java.util.Scanner;
    import java.io.BufferedReader;
    import java.io.File;
    import java.io.IOException;
    import java.io.*;
     
    public class phonebook {
     
        /**
         * @param args the command line arguments
         */
        public static void main(String[] args) {
            boolean b;
            String holder;
            List<String> results = new ArrayList<String>();
            int count = 0;
            String parameter;
            String paramet;
            String Z = null ;
            String X = null ;
            String Y = null ;
     
            try{
     
                Scanner kbdin = new Scanner(System.in);
     
                System.out.println("Enter X to Search for name");
                System.out.println("Enter Y to Edit name");
                System.out.println("Enter Z to Add  name");
                paramet = in.readLine();
            if (paramet!=X){ System.out.print(paramet);
             BufferedReader in = new BufferedReader(new InputStreamReader(System.in));
                System.out.println("Enter name:");
                parameter = in.readLine();
                System.out.println("");
     
                File file = new File("C:\\Users\\musa\\Documents\\NetBeansProjects\\PhoneBook\\src\\phonebook\\phonenumber.txt");
     
                Scanner s = new Scanner(file);
                while(b = s.hasNext()){
                    holder = s.next();
                    if(holder.startsWith(parameter, 0)) {
                    results.add(holder);
                    count++;
                    }
     
                }
                System.out.println("+++++++ "+count+" OUTPUT +++++++");
                if(results.isEmpty()){
     
                  System.out.println();
                  System.out.println("ZITA RASHAIKWA!!");
                  System.out.println();
                }
                for(String r : results){
                    System.out.println(r);
                }
                System.out.println("");
        }
         else if (paramet!=Y){
     
            System.out.println("Enter name to edit");
            Scanner kbdin = new Scanner(System.in);
                  Scanner editname = new Scanner(System.in);
            String filename ="phonenumber.txt";
        FileWriter targetFile = new  FileWriter(filename);
        PrintWriter writer = new PrintWriter(targetFile);
     
    writer.println(editname);
     
     
     
         }
     
    else if (paramet!=Z){
        System.out.println("Enter name to Add to contacts");
     
            Scanner kbdin = new Scanner(System.in);
                   Scanner addname = new Scanner(System.in);
           BufferedWriter out = new BufferedWriter(new FileWriter("phonebook.txt"));
        out.write("addname");
        out.close();
     
     
    }
     
     
     
    else {
            System.out.println("INVALID SELECTION!!");
    }   }
     
             catch(IOException e) {}}
            // TODO code application logic here
        }

    The compile output is:

    run:
    Enter X to Search for name
    Enter Y to Edit name
    Enter Z to Add name
    Exception in thread "main" java.lang.RuntimeException: Uncompilable source code
    at phonebook.phonebook.main(phonebook.java:39)
    Java Result:
    Last edited by mu'min; December 16th, 2010 at 07:55 AM.


  2. #2
    Crazy Cat Lady KevinWorkman's Avatar
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    Default Re: phone book code problems

    When posting code, make sure you use the code tags. Take a look at other posts as examples.

    That isn't compiler output. That's a runtime error. What happens when you compile without running? Which line is line 39?

  3. #3
    mmm.. coffee JavaPF's Avatar
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    Default Re: phone book code problems

    There are quite a few errors in your code!!

    For a start, you have declared the Scanner kbdin multiple times. Why?
    You can easily do this with just 1 Scanner.

    Also, this is wrong:

    paramet = in.readLine();

    If this is meant for the Scanner, the method readLine is undefined. Try .nextLine();
    Please use [highlight=Java] code [/highlight] tags when posting your code.
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