Example usage for java.lang Integer toHexString

Introduction

In this page you can find the example usage for java.lang Integer toHexString.

Prototype

public static String toHexString(int i)

Source Link

Document

Returns a string representation of the integer argument as an unsigned integer in base 16.

Usage

From source file:Main.java

public static String bytesToHexString(byte[] src) {
    StringBuilder stringBuilder = new StringBuilder();
    if (src == null || src.length <= 0) {
        return null;
    }//  w w w.j  av  a  2 s . c o  m
    for (int i = 0; i < src.length; i++) {
        int v = src[i] & 0xFF;
        String hv = Integer.toHexString(v);
        if (hv.length() < 2) {
            stringBuilder.append(0);
        }
        stringBuilder.append(hv);
    }
    return stringBuilder.toString();
}

From source file:com.appdynamicspilot.util.MD5.java

/**
 * Returns the hashed value of <code>clear</code>.
 *//*from   w w w .ja  v a 2  s .  c o m*/
public static String hash(String clear) throws Exception {
    try {
        MessageDigest md = MessageDigest.getInstance("MD5");
        byte[] b = md.digest(clear.getBytes());

        int size = b.length;
        StringBuffer h = new StringBuffer(size);
        for (int i = 0; i < size; i++) {
            int u = b[i] & 255; // unsigned conversion
            if (u < 16) {
                h.append("0" + Integer.toHexString(u));
            } else {
                h.append(Integer.toHexString(u));
            }
        }
        return h.toString();
    } catch (Exception e) {
        throw new Exception(e);
    }
}

From source file:Main.java

public static int prefixCodedToInt(final String prefixCoded) {
    final int shift = prefixCoded.charAt(0) - SHIFT_START_INT;
    if (shift > 31 || shift < 0)
        throw new NumberFormatException(
                "Invalid shift value in prefixCoded string (is encoded value really an INT?)");
    int sortableBits = 0;
    for (int i = 1, len = prefixCoded.length(); i < len; i++) {
        sortableBits <<= 7;//from   ww w .  j a  va  2 s  . c  o  m
        final char ch = prefixCoded.charAt(i);
        if (ch > 0x7f) {
            throw new NumberFormatException("Invalid prefixCoded numerical value representation (char "
                    + Integer.toHexString(ch) + " at position " + i + " is invalid)");
        }
        sortableBits |= ch;
    }
    return (sortableBits << shift) ^ 0x80000000;
}

From source file:com.yoho.core.trace.DefaultSpanNamer.java

private static boolean isDefaultToString(Object delegate, String spanName) {
    return (delegate.getClass().getName() + "@" + Integer.toHexString(delegate.hashCode())).equals(spanName);
}

From source file:Main.java

public static String SHA1(String text) throws NoSuchAlgorithmException {
    MessageDigest md = MessageDigest.getInstance("SHA-1");
    md.update(text.getBytes());//ww w .j  ava 2  s.c  o m

    byte byteData[] = md.digest();

    //convert the byte to hex format method 1
    StringBuffer sb = new StringBuffer();
    for (int i = 0; i < byteData.length; i++) {
        sb.append(Integer.toString((byteData[i] & 0xff) + 0x100, 16).substring(1));
    }

    //System.out.println("Hex format : " + sb.toString());

    //convert the byte to hex format method 2
    StringBuffer hexString = new StringBuffer();
    for (int i = 0; i < byteData.length; i++) {
        String hex = Integer.toHexString(0xff & byteData[i]);
        if (hex.length() == 1)
            hexString.append('0');
        hexString.append(hex);
    }
    return hexString.toString();
}

From source file:Main.java

public static String calcHash(File file, String algo) throws Exception {
    MessageDigest digester = MessageDigest.getInstance(algo);

    FileInputStream is = new FileInputStream(file);
    DigestInputStream dis;/*from   ww  w  .j  av  a  2  s .co m*/
    try {
        dis = new DigestInputStream(is, digester);

        for (byte[] buffer = new byte[1024 * 4]; dis.read(buffer) >= 0;) {
            // just read it
        }
    } finally {
        is.close();
    }

    byte[] digest = digester.digest();

    StringBuffer hash = new StringBuffer(digest.length * 2);

    for (int i = 0; i < digest.length; i++) {
        int b = digest[i] & 0xFF;

        if (b < 0x10) {
            hash.append('0');
        }

        hash.append(Integer.toHexString(b));
    }

    return hash.toString();
}

From source file:Main.java

/**
 * <p>Converts the string to the unicode format '\u0020'.</p>
 * /*from   ww  w. j av  a2 s.com*/
 * <p>This format is the Java source code format.</p>
 *
 * <pre>
 *   CharUtils.unicodeEscaped(' ') = "\u0020"
 *   CharUtils.unicodeEscaped('A') = "\u0041"
 * </pre>
 * 
 * @param ch  the character to convert
 * @return the escaped unicode string
 */
public static String unicodeEscaped(char ch) {
    if (ch < 0x10) {
        return "\\u000" + Integer.toHexString(ch);
    } else if (ch < 0x100) {
        return "\\u00" + Integer.toHexString(ch);
    } else if (ch < 0x1000) {
        return "\\u0" + Integer.toHexString(ch);
    }
    return "\\u" + Integer.toHexString(ch);
}

From source file:Main.java

/**
 * Checks to see if a GLES error has been raised.
 *///www  .  j  a v a2s  . c o  m
public static void checkGlError(String op) {
    int error = GLES20.glGetError();
    if (error != GLES20.GL_NO_ERROR) {
        String msg = op + ": glError 0x" + Integer.toHexString(error);
        Log.e(TAG, msg);
        throw new RuntimeException(msg);
    }
}

From source file:license.mac.MacTest.java

private static String getMACAddress(InetAddress ia) throws Exception {
    //???mac?mac?byte
    byte[] mac = NetworkInterface.getByInetAddress(ia).getHardwareAddress();

    //??mac??String
    StringBuffer sb = new StringBuffer();

    for (int i = 0; i < mac.length; i++) {
        if (i != 0) {
            sb.append("-");
        }// ww w .  java 2 s  . c  om
        //mac[i] & 0xFF byte
        String s = Integer.toHexString(mac[i] & 0xFF);
        sb.append(s.length() == 1 ? 0 + s : s);
    }

    //???mac?
    return sb.toString().toUpperCase();
}

From source file:Main.java

private static final String uuidStringFromUuid16(int uuid16) {

    StringBuilder b = new StringBuilder();
    String hex = Integer.toHexString(uuid16 & MASK_UUID16);
    b.append("00000000".substring(hex.length()));
    b.append(hex);//from   ww  w.jav a  2s  . c  o  m
    b.append('-');
    b.append(UUID_BASE);

    return b.toString();
}