How to open a text file without using dialog box

Question

I can open a file using dialog box but I want to open a file without using any dialog box for writing.
With the following commands a new file is created.
File outputFile = new File("outagain.txt");
FileWriter out = new FileWriter(outputFile);
I want to open an existing file and put some more text in it using FileWriter or any other object
rgds,
Arsalan

Answer 1

import java.io.*;
class UReader
    BufferedReader in;
    BufferedReader input;
    String fileName;
    public UReader(String fileName)
        this.fileName = null;
        this.fileName = fileName;
        try
            in = new BufferedReader(new FileReader(fileName));
            input = new BufferedReader(new FileReader("A.b"));
        catch(IOException _ex) { }
    public final String getContent()
        String txt = "";
        try
            while(in.ready())
                txt = txt + in.readLine();
                txt = txt + "\n";
            in.close();
            txt.trim();
        catch(IOException _ex) { }
        return txt;
    public final String getLine(int row)
        try
            input = new BufferedReader(new FileReader(fileName));
        catch(IOException _ex) { }
        String txt = null;
        if(row <= getRows()) {
            try
                for(int i = 0; i < row; i++)
                    txt = input.readLine();
                input.close();
            catch(IOException _ex) { }
        } else {
            txt = "Index out of Bounds";
        return txt;
    public final int getRows()
        try
            input = new BufferedReader(new FileReader(fileName));
        catch(IOException _ex) { }
        String txt = null;
        int rows = 0;
        try
            while(input.ready())
                txt = input.readLine();
                rows++;
            input.close();
        catch(IOException _ex) { }
        return rows;
import java.io.*;
import java.util.*;
class UWriter
    PrintWriter out;
    String fileName;
    String[] txt;
    static int NEW_LINE = 1;
    static int APPEND = 0;
    public UWriter(String s)
        fileName = null;
        txt = null;
        fileName = s;
        try
            out = new PrintWriter(new BufferedWriter(new FileWriter(s, true)));
        catch(IOException ioexception) { }
    public final void addContent(String s, int i)
        int l = 0;
        StringBuffer sb = new StringBuffer(s);
        s.replaceAll("\n\n", "\n###\n");
        StringTokenizer str = new StringTokenizer(s, "\n");
        String token = null;
        while (str.hasMoreTokens()) {
            ++l;
            token = str.nextToken();
        str = new StringTokenizer(s, "\n");
        txt = new String[l];
        int k = 0;
        String test;
        while (str.hasMoreTokens()) {
            test = str.nextToken();
            if (test.equals("###")) test = "";
            txt[k++] = test;
        if(i == 0) {
            try
                for (int j = 0; j < txt.length; ++j) {
                    out.println(txt[j]);
                out.close();
            catch(Exception ioexception) { }
        } else {
            try
                out.println();
                for (int j = 0; j < txt.length; ++j) {
                    out.println(txt[j]);
                out.close();
            catch(Exception ioexception1) { }
    public final void writeContent(String s)
        int l = 0;
        s.replaceAll("\n\n", "###");
        StringTokenizer str = new StringTokenizer(s, "\n");
        String token = null;
        while (str.hasMoreTokens()) {
            ++l;
            token = str.nextToken();
        str = new StringTokenizer(s, "\n");
        txt = new String[l];
        int k = 0;
        String test;
        while (str.hasMoreTokens()) {
            test = str.nextToken();
            if (test.equals("###")) test = "";
            txt[k++] = test;
        try
            PrintWriter bufferedwriter = new PrintWriter(new BufferedWriter(new FileWriter(fileName, false)));
            for (int j = 0; j < txt.length; ++j) {
                bufferedwriter.println(txt[j]);
            bufferedwriter.close();
        catch(IOException ioexception) { }
}Maybe they are not the best codes, i wrote them a long time ago, so dont ask why i did anything wierd. :D
But anyway it works.