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Thread: Problem related to file handling example

  1. #1
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    Unhappy Problem related to file handling example

    Well hello everyone. I am facing a problem while executing a task. My task is to make such a code which will search for my source code file (abc.java) in all directories and then displays the code in textarea inside frame and along with that i also have to display the path of the file in text field. I have coded something but i am really not getting anywhere near my task. Sincere help needed urgently.Thankx in advance.

     
     
    import javax.swing.*;
    import java.awt.*;
    import java.io.*;
    import java.util.*
     
    public class Lab extends JFrame {
     
        static JTextField jf;
        static String Files;
        static File ff = new File("Lab.java");
        static File ff1 = new File("D:\\");
     
        public static void main(String[] args) {
            Lab bf = new Lab();					//Making Frame
            bf.setBounds(20, 20, 400, 400);
            bf.setLayout(new BorderLayout());
     
            JTextField jf = new JTextField("");
     
            TextArea jt = new TextArea("                                                                 ");
            Search(ff1);
            bf.add(jf, BorderLayout.NORTH);						//Now adding the  ALL panelS to frame
            bf.add(jt, BorderLayout.CENTER);
            bf.setVisible(true);
     
        }       //Main Ends
     
        public static void Search(File file) {
     
            try {
                FileInputStream fis = new FileInputStream(file);
                /* if (!ff.exists()) {
                 throw new FileNotFoundException("file doesn't exist");
                 }*/
     
                File[] listOfFiles = file.listFiles();
     
                for (int i = 0; i < listOfFiles.length; i++) {
     
                    if (listOfFiles[i].isDirectory()) {
                        Search(listOfFiles[i]);
     
                    } else if (!(listOfFiles[i].isDirectory())) {
     
                        Files = listOfFiles[i].getName();
                        if (Files.equals("Lab.java")) {
                            jf.setText("file found");
     
                        }
     
                    }
                }
                String path = ff.getAbsolutePath();
     
            } catch (Exception e) {
     
            }
     
        }
    }


  2. #2
    Super Moderator Norm's Avatar
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    Default Re: Problem related to file handling example

    Can you explain what problems you are having and ask some specific questions about your task?
    What steps for the task have you completed and tested?
    What steps need to be done?
    If you don't understand my answer, don't ignore it, ask a question.

  3. #3
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    Default Re: Problem related to file handling example

    Well i am have been able to create JtextField and TextArea . Now i am trying to search the file in D drive ... I pasted my source code file (.java file) in D drive but it is not giving me the path in TextField . After that i will read the file and display the code in TextArea

  4. #4
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    Default Re: Problem related to file handling example

    Work on the problems one at a time: search the file in D drive
    What steps is the code taking to do that?
    If you don't understand my answer, don't ignore it, ask a question.

  5. #5
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    Default Re: Problem related to file handling example

    I will get the path of file using getabsolutepath and then i will list files in that directory and check for equality with my file name ... using

    if(file.equals("abc.text"){}

  6. #6
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    Default Re: Problem related to file handling example

    OK, is that working? If not where are you having problems?
    Where does the code test for subdirectories and search them?

    For developing and testing the search code, write a small simple program to do that without any GUI. It should have just the code for the search.
    If you don't understand my answer, don't ignore it, ask a question.

  7. #7
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    Default Re: Problem related to file handling example

    The problem is that i have to submit the code after three hours and everything is messed up here.. I m doing coding at the moment.. Please help me if possible or at least stay in touch while i code the problem and ask you the answers to my question

  8. #8
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    Default Re: Problem related to file handling example

    Start by making a small program with a method that searchs for the desired file. After you get that to work, the code/technique can be copied to the larger program.

    You need to decide on the steps the program should take BEFORE writing code.
    If you don't understand my answer, don't ignore it, ask a question.

  9. #9
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    Default Re: Problem related to file handling example

    Got it .. DONE THANKX FOR THE GUIDANCE
    import javax.swing.*;
    import java.awt.*;
    import java.io.*;
    import java.util.*;
     
    public class Lab2 extends JFrame {
     
        static String temp;
        static File Base = new File(".//Lab2.java");
        static File ff = new File("D:\\");
        static JTextField jf = new JTextField("finding");
        static TextArea jt = new TextArea("                                                                 ");
     
        public static void main(String[] args) {
            Lab2 bf = new Lab2();					//Making Frame
            bf.setBounds(20, 20, 400, 400);
            bf.setLayout(new BorderLayout());
     
            bf.add(jf, BorderLayout.NORTH);						//Now adding the  ALL panelS to frame
            bf.add(jt, BorderLayout.CENTER);
            bf.setVisible(true);
            Search(ff);
        }       //Main Ends
     
        public static void Search(File file) {
     
            String absolutepath = file.getAbsolutePath();
            File ff1 = new File(absolutepath);
            File[] List = ff1.listFiles(); //Listing all the files
     
            /*if (List == null) {
             return;
             }*/        try {
                for (File f : List) {
                    if (f.isDirectory()) { //If file is directory we call the method again 
                        Search(f);
                    } else if (!(f.isDirectory())) { //If not directory  then we check for file
                        if (f.getName().equals("Lab2.java")) {
                            temp = f.getAbsolutePath();
                            jf.setText(f.getAbsolutePath());
                            FileInputStream fis = new FileInputStream(f);
                            byte[] b = new byte[(int) f.length()];  //Now we read bytes to input stream
                            fis.read(b);
     
                            for (int j = 0; j < b.length; j++) {
                                                                    //Show output stream
                                jt.append("" + (char) b[j]);
                            }
                            break;
     
                        }
                    }
                }
            } catch (Exception e) {
            }
        } // Search Ends
     
    }   //Class ends[COLOR="Silver"]
     
    --- Update ---
     
    [/COLOR]Got it :D .. DONE THANKX FOR THE GUIDANCE
    import javax.swing.*;
    import java.awt.*;
    import java.io.*;
    import java.util.*;
     
    public class Lab2 extends JFrame {
     
        static String temp;
        static File Base = new File(".//Lab2.java");
        static File ff = new File("D:\\");
        static JTextField jf = new JTextField("finding");
        static TextArea jt = new TextArea("                                                                 ");
     
        public static void main(String[] args) {
            Lab2 bf = new Lab2();					//Making Frame
            bf.setBounds(20, 20, 400, 400);
            bf.setLayout(new BorderLayout());
     
            bf.add(jf, BorderLayout.NORTH);						//Now adding the  ALL panelS to frame
            bf.add(jt, BorderLayout.CENTER);
            bf.setVisible(true);
            Search(ff);
        }       //Main Ends
     
        public static void Search(File file) {
     
            String absolutepath = file.getAbsolutePath();
            File ff1 = new File(absolutepath);
            File[] List = ff1.listFiles(); //Listing all the files
     
            /*if (List == null) {
             return;
             }*/        try {
                for (File f : List) {
                    if (f.isDirectory()) { //If file is directory we call the method again 
                        Search(f);
                    } else if (!(f.isDirectory())) { //If not directory  then we check for file
                        if (f.getName().equals("Lab2.java")) {
                            temp = f.getAbsolutePath();
                            jf.setText(f.getAbsolutePath());
                            FileInputStream fis = new FileInputStream(f);
                            byte[] b = new byte[(int) f.length()];  //Now we read bytes to input stream
                            fis.read(b);
     
                            for (int j = 0; j < b.length; j++) {
                                                                    //Show output stream
                                jt.append("" + (char) b[j]);
                            }
                            break;
     
                        }
                    }
                }
            } catch (Exception e) {
            }
        } // Search Ends
     
    }   //Class ends
    Last edited by Shaz1234; May 6th, 2014 at 03:34 PM.

  10. #10
    Super Moderator Norm's Avatar
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    Default Re: Problem related to file handling example

    Please edit your post and wrap your code with code tags:
    [code=java]
    YOUR CODE HERE
    [/code]
    to get highlighting and preserve formatting.
    If you don't understand my answer, don't ignore it, ask a question.

  11. The Following User Says Thank You to Norm For This Useful Post:

    Shaz1234 (May 6th, 2014)

  12. #11
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    Default Re: Problem related to file handling example

    Done so is the code good enough?

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