Java Utililty Methods Temp File Create

List of utility methods to do Temp File Create

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Description

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

Method

StringgetUniqueFilename(String filename, String extension)
get Unique Filename 
return filename + "_" + getCurrentDateAsString("yyyy_MM_dd_HH_mm_ss_SSS") + "." + extension;
StringgetUniqueFileName(String fileNamePrefix, String fileExtension)
get Unique File Name 
Date d = Calendar.getInstance().getTime();
long now = System.currentTimeMillis();
return "QTIScoringEngine_" + fileNamePrefix + "_"
        + DateFormat.getDateInstance(DateFormat.SHORT).format(d).replace("/", "-") + "_"
        + DateFormat.getTimeInstance(DateFormat.LONG).format(d).replace(" ", "").replace(":", "_")
        + fileExtension;
StringgetUniqueFileName(String originalFileName)
Gets a unique file name, based on the fileName with the time in milliseconds added before the file extension., This works with all file types including directories. 
int index = originalFileName.lastIndexOf('.');
if (index < 0)
    index = originalFileName.length();
String suffix = originalFileName.substring(index);
originalFileName = originalFileName.replace(suffix, "");
String newFileName = originalFileName + "_" + getDateTimeMilliSecondEnsureUnique() + suffix;
return newFileName;
FilegetUniqueTempFile(final boolean autoDelete, final File parentFolder, final String suffix)
get Unique Temp File 
final File tmpFile = File.createTempFile(
        "test_" + new SimpleDateFormat("ddMMMyyyy-HHmmss").format(new Date()), suffix, parentFolder);
if (autoDelete) {
    tmpFile.deleteOnExit();
return tmpFile;
FilenewTmpFile(String content)
Creates a new temporary file using the default encoding of ISO-8859-1 (Latin1). 
return newTmpFile(content, "ISO-8859-1");
FilenewTmpFile(String content, String encoding)
Makes a new temporary file and writes content into it. 
Writer out = null;
Reader in = null;
File f = null;
try {
    f = File.createTempFile("jspwiki", null);
    in = new StringReader(content);
    out = new OutputStreamWriter(new FileOutputStream(f), encoding);
    copyContents(in, out);
...