Java Utililty Methods File Append

List of utility methods to do File Append

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Description

The list of methods to do File Append are organized into topic(s).

Method

voidappendFile(String source, String filetoappend)
append File 
try {
    boolean append = true;
    File filesrc = new File(source);
    BufferedWriter output = new BufferedWriter(new FileWriter(filesrc, append));
    File ftoappend = new File(filetoappend);
    BufferedReader br = new BufferedReader(new FileReader(ftoappend));
    String line = br.readLine();
    while (line != null) {
...
booleanappendFile(String strThrift, String filePath)
append File 
PrintWriter out = null;
try {
    out = new PrintWriter(new BufferedWriter(new FileWriter(filePath, true)));
    out.println(strThrift);
    out.flush();
    out.close();
} catch (IOException e) {
    return false;
...
booleanappendFileBytes(String srcFileName, String tarFileName)
append File Bytes 
BufferedInputStream inBuff = null;
BufferedOutputStream outBuff = null;
try {
    inBuff = new BufferedInputStream(new FileInputStream(srcFileName));
    outBuff = new BufferedOutputStream(new FileOutputStream(tarFileName, true));
    byte[] b = new byte[1024 * 5];
    int len;
    while ((len = inBuff.read(b)) != -1) {
...
voidappendFileContent(File file, String content, boolean append)
Appends content to given file. 
Writer fw = null;
try {
    fw = new OutputStreamWriter(new FileOutputStream(file, append), "UTF-8");
    fw.append(content);
} finally {
    if (fw != null)
        fw.close();
booleanappendFileLines(String fileName, String[] data)
{ method 
return appendFileLines(new File(fileName), data);
voidappendFilePart(File dstFile, byte[] bytes)
Helper method to append bytes to a specified file. 
try (FileOutputStream outputStream = new FileOutputStream(dstFile, true);) {
    outputStream.write(bytes);
    outputStream.flush();
} catch (IOException e) {
    throw new RuntimeException(
            "Could not create and append the bytes to the file " + dstFile.getAbsolutePath());
AappendHex(A sb, byte[] array, int offset, int len, char sep)
append Hex 
if (len <= 0) {
    return sb;
for (int curOffset = offset, maxOffset = offset + len; curOffset < maxOffset; curOffset++) {
    byte b = array[curOffset];
    if ((curOffset > offset) && (sep != EMPTY_HEX_SEPARATOR)) {
        sb.append(sep);
    sb.append(HEX_DIGITS.charAt((b >> 4) & 0x0F));
    sb.append(HEX_DIGITS.charAt(b & 0x0F));
return sb;
voidappendHexJavaScriptRepresentation(Appendable out, int codePoint)
Returns a javascript representation of the character in a hex escaped format. 
if (Character.isSupplementaryCodePoint(codePoint)) {
    char[] surrogates = Character.toChars(codePoint);
    appendHexJavaScriptRepresentation(out, surrogates[0]);
    appendHexJavaScriptRepresentation(out, surrogates[1]);
    return;
out.append("\\u").append(HEX_CHARS[(codePoint >>> 12) & 0xf]).append(HEX_CHARS[(codePoint >>> 8) & 0xf])
        .append(HEX_CHARS[(codePoint >>> 4) & 0xf]).append(HEX_CHARS[codePoint & 0xf]);
...
voidappendHexJavaScriptRepresentation(StringBuilder sb, char c)
append Hex Java Script Representation 
try {
    appendHexJavaScriptRepresentation(c, sb);
} catch (IOException ex) {
    throw new RuntimeException(ex);
voidappendTo(String fileName, String str)
Append a String to a file. 
RandomAccessFile f = null;
if (str == null)
    return;
try {
    f = new RandomAccessFile(fileName, "rw");
    long length = f.length();
    f.seek(length);
    f.write(str.getBytes());
...