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

/**
 * Generates a random byte and returns it as a hexadecimal string.
 *
 * @return A random byte as hexadecimal string.
 *//*from   ww  w. ja va 2  s  .c  o  m*/
public static String generatedRandomByteAsHexString() {
    if (mRandom == null) {
        mRandom = new Random(new Date().getTime());
    }

    int randomInt8 = mRandom.nextInt(256);
    return Integer.toHexString(randomInt8);
}

From source file:Main.java

public static String MD5(String s) {
    try {//from  www.j av a 2  s.c  om
        MessageDigest md = MessageDigest.getInstance("MD5");
        md.update(s.getBytes());
        byte b[] = md.digest();
        int i;
        StringBuilder buf = new StringBuilder("");
        for (int offset = 0; offset < b.length; offset++) {
            i = b[offset];
            if (i < 0)
                i += 256;
            if (i < 16)
                buf.append("0");
            buf.append(Integer.toHexString(i));
        }
        return buf.toString();
    } catch (NoSuchAlgorithmException e) {
        e.printStackTrace();
    }
    return "null";
}

From source file:Main.java

/**
 * Returns a String Object which contains the SHA256 Hash value of the input
 *
 * @param input a String object for which SHA256 should be calculated
 * @return SHA256 of the input String/*from w  w w .  j a va 2 s  . co m*/
 */
public static String getSHA256(String input) {
    try {
        MessageDigest digest = MessageDigest.getInstance("SHA-256");
        byte[] hash = digest.digest(input.getBytes("UTF-8"));
        StringBuilder hexString = new StringBuilder();

        for (int i = 0; i < hash.length; i++) {
            String hex = Integer.toHexString(0xff & hash[i]);
            if (hex.length() == 1)
                hexString.append('0');
            hexString.append(hex);
        }
        return hexString.toString();
    } catch (Exception ex) {
        throw new RuntimeException(ex);
    }
}

From source file:Main.java

public static int checkGlError(boolean throwException) {
    int error = glGetError();
    if (error != GL_NO_ERROR) {
        Log.d(s_LOG_TAG, "GL error = 0x" + Integer.toHexString(error));
        if (throwException) {
            throw new RuntimeException("GL ERROR = 0x" + Integer.toHexString(error));
        }//w ww. j av  a 2s . c o m
    }

    return error;
}

From source file:Main.java

private static StringBuffer getMd5Buffer(String text) {
    StringBuffer buf = new StringBuffer();
    try {/*from  w  ww .j ava 2s .c om*/
        MessageDigest md = MessageDigest.getInstance("MD5");
        md.update(text.getBytes());
        byte[] b = md.digest();
        int i;
        buf = new StringBuffer("");
        for (int offset = 0; offset < b.length; offset++) {
            i = b[offset];
            if (i < 0)
                i += 256;
            if (i < 16)
                buf.append("0");
            buf.append(Integer.toHexString(i));
        }
    } catch (NoSuchAlgorithmException e) {
        e.printStackTrace();
    }
    return buf;
}

From source file:Main.java

public static String MD5(String md5) {
    if (md5 == null) {
        return null;
    }/*  w  w w.  ja  va 2s  . c o  m*/
    try {
        java.security.MessageDigest md = java.security.MessageDigest.getInstance("MD5");
        byte[] array = md.digest(md5.getBytes());
        StringBuilder sb = new StringBuilder();
        for (byte anArray : array) {
            sb.append(Integer.toHexString((anArray & 0xFF) | 0x100).substring(1, 3));
        }
        return sb.toString();
    } catch (java.security.NoSuchAlgorithmException e) {
        Log.e("tmessages", e.getMessage());
    }
    return null;
}

From source file:Main.java

/**
 * Return the hexadecimal format of a plain text string.
 *
 * @param strValue//from  w w  w  . j  a  va2s.  c  om
 * @return
 */
public static String stringToHex(String strValue) {
    byte byteData[] = null;
    int intHex = 0;
    String strHex = "";
    String strReturn = "";
    try {
        byteData = strValue.getBytes("ISO8859-1");
        for (int i = 0; i < byteData.length; i++) {
            intHex = (int) byteData[i];
            if (intHex < 0)
                intHex += 256;
            if (intHex < 16)
                strHex += "0" + Integer.toHexString(intHex).toUpperCase();
            else
                strHex += Integer.toHexString(intHex).toUpperCase();
        }
        strReturn = strHex;

    } catch (Exception ex) {
        ex.printStackTrace();
    }
    return strReturn;
}

From source file:Main.java

static public String md5(String str) {
    MessageDigest algorithm = null;
    try {// www  . ja  v  a  2  s .com
        algorithm = MessageDigest.getInstance("MD5");
    } catch (NoSuchAlgorithmException e) {
        e.printStackTrace();
    }
    if (algorithm != null) {
        algorithm.reset();
        algorithm.update(str.getBytes());
        byte[] bytes = algorithm.digest();
        StringBuilder hexString = new StringBuilder();
        for (byte b : bytes) {
            if (Integer.toHexString(0xFF & b).length() == 1)
                hexString.append("0").append(Integer.toHexString(0xFF & b));
            else
                hexString.append(Integer.toHexString(0xFF & b));
        }
        return hexString.toString();
    }
    return "";

}

From source file:Main.java

public static String byteToString(byte b) {
    String s = Integer.toHexString(b & 0xff).toUpperCase();
    if (s.length() > 1) {
        return s;
    } else {/*from  www .jav a2  s. co  m*/
        return "0" + s;
    }
}

From source file:Main.java

public static String hexString(byte[] bytes) {
    StringBuilder val = new StringBuilder();
    for (byte b : bytes) {
        if (b <= 15)
            val.append("0");
        val.append(Integer.toHexString(b & 0xFF));
    }/*  w  w  w.  j  av a  2  s .c  o  m*/
    return val.toString().toLowerCase(Locale.US);
}