Example usage for java.io File createTempFile

Introduction

In this page you can find the example usage for java.io File createTempFile.

Prototype

public static File createTempFile(String prefix, String suffix) throws IOException

Source Link

Document

Creates an empty file in the default temporary-file directory, using the given prefix and suffix to generate its name.

Usage

From source file:name.martingeisse.esdk.simulation.lwjgl.NativeLibraryHelper.java

/**
 * Extracts LWJGL libraries to a folder and 
 * @throws Exception on errors/* ww  w  .j  a  va  2  s  .  c o  m*/
 */
public static void prepareNativeLibraries() throws Exception {

    // Unfortunately, Java is also too stupid to create a temp directory...
    tempFolder = File.createTempFile("miner-launcher-", "");
    deleteRecursively(tempFolder);
    tempFolder.mkdir();
    logger.debug("temp: " + tempFolder.getAbsolutePath());

    // detect which set of native libraries to load, then extract the files
    resourcePath = OperatingSystemSelector.getHostOs().getNativeLibraryPath();
    logger.debug("native library path: " + resourcePath);
    for (String fileName : OperatingSystemSelector.getHostOs().getNativeLibraryFileNames()) {
        extractFile(fileName);
    }

    // make Java use our libraries
    System.setProperty("java.library.path", tempFolder.getAbsolutePath());
    final Field fieldSysPath = ClassLoader.class.getDeclaredField("sys_paths");
    fieldSysPath.setAccessible(true);
    fieldSysPath.set(null, null);

}

From source file:QRCode.java

public static String createQRCode(String arg) {
    int size = 125;
    String fileType = "png";
    File myFile = null;//  www . j av a 2  s  .co m
    UUID uuid = UUID.nameUUIDFromBytes(arg.getBytes());

    try {
        myFile = File.createTempFile("temp-file-name", ".png");

        Hashtable<EncodeHintType, ErrorCorrectionLevel> hintMap = new Hashtable<EncodeHintType, ErrorCorrectionLevel>();
        hintMap.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.L);
        QRCodeWriter qrCodeWriter = new QRCodeWriter();
        BitMatrix byteMatrix = qrCodeWriter.encode(uuid.toString(), BarcodeFormat.QR_CODE, size, size, hintMap);
        int CrunchifyWidth = byteMatrix.getWidth();
        BufferedImage image = new BufferedImage(CrunchifyWidth, CrunchifyWidth, BufferedImage.TYPE_INT_RGB);
        image.createGraphics();

        Graphics2D graphics = (Graphics2D) image.getGraphics();
        graphics.setColor(Color.WHITE);
        graphics.fillRect(0, 0, CrunchifyWidth, CrunchifyWidth);
        graphics.setColor(Color.BLACK);

        for (int i = 0; i < CrunchifyWidth; i++) {
            for (int j = 0; j < CrunchifyWidth; j++) {
                if (byteMatrix.get(i, j)) {
                    graphics.fillRect(i, j, 1, 1);
                }
            }
        }
        ImageIO.write(image, fileType, myFile);
        //System.out.println("\n\nYou have successfully created QR Code " + myFile.getCanonicalPath());
        return myFile.getCanonicalPath();
    } catch (WriterException e) {
        e.printStackTrace();
    } catch (IOException e) {
        e.printStackTrace();
    }

    return null;
}

From source file:de.elomagic.mag.ConfigurationTest.java

@BeforeClass
public static void beforeClassConfigurationTest() throws Exception {
    file = File.createTempFile("test_", ".properties");
    file.deleteOnExit();/*from  ww w  . j  ava  2 s .co  m*/
}

From source file:Main.java

private static File createFileFromInputStream(InputStream inputStream, String name) {

    try {//  w  ww  .j  a va 2 s  . c o  m
        File f = File.createTempFile("font", null);
        OutputStream outputStream = new FileOutputStream(f);
        byte buffer[] = new byte[1024];
        int length = 0;

        while ((length = inputStream.read(buffer)) > 0) {
            outputStream.write(buffer, 0, length);
        }

        outputStream.close();
        inputStream.close();
        return f;
    } catch (Exception e) {
        // Logging exception
        e.printStackTrace();
    }

    return null;
}

From source file:com.googlecode.fannj.FannTest.java

public static File createTemp(File src) throws IOException {
    File temp = File.createTempFile("fannj_", ".net");
    temp.deleteOnExit();//from w w w . j a  v  a2 s.  c o  m
    FileUtils.copyFile(src, temp);
    return temp;
}

From source file:net.grinder.util.ConsolePropertiesFactory.java

/**
 * Create empty {@link ConsoleProperties}. the created {@link ConsoleProperties} instance links
 * with temp/temp_console directory.//w w  w  .j a  v a2 s  .c  om
 *
 * @return empty {@link ConsoleProperties} instance
 */
public static ConsoleProperties createEmptyConsoleProperties() {
    File tmpFile = null;
    try {
        tmpFile = File.createTempFile("ngrinder", "tmp");
        return new ConsoleProperties(SingleConsole.RESOURCE, tmpFile);
    } catch (Exception e) {
        throw processException("Exception occurred while creating empty console property", e);
    } finally {
        FileUtils.deleteQuietly(tmpFile);
    }
}

From source file:Main.java

private static String createPKCS11ConfigFile(String pkcs11LibPath) {
    File f = null;//from  w  ww  .  j  a v a  2s  .com
    PrintWriter writer = null;
    try {
        f = File.createTempFile("pkcs11", ".cfg");
        f.deleteOnExit();
        writer = new PrintWriter(new FileOutputStream(f));
        writer.println("name = verinice");
        writer.println("description = verinice PKCS#11 configuration");
        writer.println("library = " + pkcs11LibPath);
        writer.close();
    } catch (IOException e) {
        return null;
    } finally {
        if (writer != null)
            writer.close();
    }

    return f.getAbsolutePath();
}

From source file:com.linkedin.pinot.common.TestUtils.java

public static String getFileFromResourceUrl(URL resourceUrl) {
    System.out.println(resourceUrl);
    // Check if we need to extract the resource to a temporary directory
    String resourceUrlStr = resourceUrl.toString();
    if (resourceUrlStr.contains("jar!")) {
        try {/*from   ww w.  ja v  a2s. co  m*/
            String extension = resourceUrlStr.substring(resourceUrlStr.lastIndexOf('.'));
            File tempFile = File.createTempFile("pinot-test-temp", extension);
            LOGGER.info("Extractng from " + resourceUrlStr + " to " + tempFile.getAbsolutePath());
            System.out.println("Extractng from " + resourceUrlStr + " to " + tempFile.getAbsolutePath());
            FileUtils.copyURLToFile(resourceUrl, tempFile);
            return tempFile.getAbsolutePath();
        } catch (IOException e) {
            throw new RuntimeException(e);
        }
    } else {
        System.out.println("Not extracting plain file " + resourceUrl);
        return resourceUrl.getFile();
    }
}

From source file:de.tudarmstadt.ukp.dkpro.argumentation.annotations.Tools.java

public static String dumpCas(JCas jCas) {
    try {//from   w  w  w. j a  v a 2s .  co  m
        File f = File.createTempFile("casdump", ".txt");
        SimplePipeline.runPipeline(jCas, AnalysisEngineFactory.createEngineDescription(CasDumpWriter.class,
                CasDumpWriter.PARAM_OUTPUT_FILE, f));

        StringBuilder result = new StringBuilder(FileUtils.readFileToString(f));

        FileUtils.deleteQuietly(f);

        result.append("Id:").append(DocumentMetaData.get(jCas).getDocumentId());

        return result.toString();
    } catch (Exception e) {
        throw new RuntimeException(e);
    }
}

From source file:com.genericworkflownodes.knime.custom.ZipUtilsTest.java

public static File createTempDirectory() throws IOException {
    final File temp;

    temp = File.createTempFile("temp", Long.toString(System.nanoTime()));

    if (!(temp.delete())) {
        throw new IOException("Could not delete temp file: " + temp.getAbsolutePath());
    }//from w  w  w  .ja  v  a 2 s .co m

    if (!(temp.mkdir())) {
        throw new IOException("Could not create temp directory: " + temp.getAbsolutePath());
    }

    return (temp);
}