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

/*** this method transfer characters into unicode(U+****U+****...)
 * if bad input ,then return ""**//from  w w w  . ja va  2s .  co  m
 *
 * s_input is a chinese or english string to be translated can not be null
 */
private static String get_cnuni_out(String s_input) {
    int k = s_input.length();
    String res = "", ith = "";
    int ii, m;
    for (int i = 0; i < k; ++i) {
        ith = Integer.toHexString((int) (s_input.charAt(i)));
        m = ith.length();
        for (ii = 0; ii < 4 - m; ii++) {
            ith = "0" + ith;
        }
        res = res + u_big + ith;
    }
    return res;
}

From source file:Main.java

public static String encryptMD5(String password) {
    try {/*from   w  w  w. j av a 2 s  .c  om*/
        MessageDigest md = MessageDigest.getInstance("MD5");
        md.update(password.getBytes());
        byte byteData[] = md.digest();
        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();
    } catch (Exception e) {
        e.printStackTrace();
    }
    return "";
}

From source file:Main.java

public static String md5(String str) {
    try {// w ww.j  a v a  2s .co m
        MessageDigest md = MessageDigest.getInstance("MD5");
        md.update(str.getBytes());

        byte[] b = md.digest();
        StringBuffer sb = new StringBuffer();
        for (int i = 0; i < b.length; i++) {
            int v = (int) b[i];
            v = v < 0 ? 0x100 + v : v;
            String cc = Integer.toHexString(v);
            if (cc.length() == 1)
                sb.append('0');
            sb.append(cc);
        }

        return sb.toString();
    } catch (Exception e) {
    }
    return "";
}

From source file:Main.java

public static String sha1(String s) {
    try {/*from ww  w  .ja  v  a2  s .c o  m*/
        MessageDigest digest = MessageDigest.getInstance("SHA-1");
        digest.update(s.getBytes());
        byte messageDigest[] = digest.digest();

        StringBuffer hexString = new StringBuffer();
        for (int i = 0; i < messageDigest.length; i++) {
            hexString.append(Integer.toHexString((0xFF & messageDigest[i]) | 0x100).substring(1));
        }
        return hexString.toString();
    } catch (NoSuchAlgorithmException e) {
        return "";
    }
}

From source file:ColorUtils.java

/**
 * Serializes a color to its HTML markup (e.g. "#ff0000" for red)
 * //w w w.  j  a  va2s.  c o  m
 * @param c The color to serialize
 * @return The HTML markup of the color
 */
public static String toHTML(Color c) {
    String ret = "#";
    String hex;
    hex = Integer.toHexString(c.getRed());
    if (hex.length() < 2)
        hex = "0" + hex;
    ret += hex;
    hex = Integer.toHexString(c.getGreen());
    if (hex.length() < 2)
        hex = "0" + hex;
    ret += hex;
    hex = Integer.toHexString(c.getBlue());
    if (hex.length() < 2)
        hex = "0" + hex;
    ret += hex;
    return ret;
}

From source file:Main.java

public static String MD5(String md5) {
    if (md5 == null) {
        return null;
    }/*from w  w w.j ava2s. c  o  m*/
    try {
        MessageDigest md = MessageDigest.getInstance("MD5");
        byte[] array = md.digest(md5.getBytes());
        StringBuilder sb = new StringBuilder();
        for (int a = 0; a < array.length; a++) {
            sb.append(Integer.toHexString((array[a] & 0xFF) | 0x100).substring(1, 3));
        }
        return sb.toString();
    } catch (java.security.NoSuchAlgorithmException e) {
        e.printStackTrace();
    }
    return null;
}

From source file:Main.java

public static String md5(final String s) {
    try {//w  w w .jav  a 2s .c om
        MessageDigest digest = MessageDigest.getInstance("MD5");
        digest.update(s.getBytes());
        byte messageDigest[] = digest.digest();

        StringBuffer hexString = new StringBuffer();
        for (int i = 0; i < messageDigest.length; i++) {
            String h = Integer.toHexString(0xFF & messageDigest[i]);
            while (h.length() < 2)
                h = "0" + h;
            hexString.append(h);
        }
        return hexString.toString();
    } catch (NoSuchAlgorithmException e) {
    }
    return "";
}

From source file:Main.java

/**
 * Generate a unicast MAC address./*from w w w .java2  s  . co m*/
 * A unicast MAC address is the one with an even second hex.
 * i.e. x[0,2,4,6,8,A,C,E]:xx:xx:xx:xx:xx
 * 
 * @return Unicast MAC address
 */
public static String generateRandomMACAddress() {
    Random r = new Random();
    StringBuffer sb = new StringBuffer();
    sb.append(Integer.toHexString(r.nextInt(16)));
    int i = r.nextInt(16);
    while (i % 2 != 0)
        i = r.nextInt(16);
    sb.append(Integer.toHexString(i));
    while (sb.length() <= 12)
        sb.append(Integer.toHexString(r.nextInt()));
    String address = prepareMACAddress(sb.subSequence(0, 12).toString());
    if (address.equals("ff:ff:ff:ff:ff:ff"))
        return generateRandomMACAddress();
    return address;
}

From source file:Main.java

public static String MD5(String text) {
    StringBuffer buffer;//ww w . j av  a  2s .c  om
    MessageDigest digest;
    byte[] data;
    int i, n;

    buffer = new StringBuffer();

    try {
        digest = MessageDigest.getInstance("MD5");
        digest.update(text.getBytes());
        data = digest.digest();

        for (i = 0, n = data.length; i < n; ++i) {
            buffer.append(Integer.toHexString(0xff & data[i]));
        }
    } catch (Exception e) {
    }

    return buffer.toString();
}

From source file:Main.java

public static String crypt(String senha) {
    try {/*  w w  w  . j a v a2s . c  om*/
        MessageDigest digest = MessageDigest.getInstance("MD5");
        digest.update(senha.getBytes());

        byte messageDigest[] = digest.digest();
        StringBuffer hexString = new StringBuffer();

        for (int i = 0; i < messageDigest.length; i++) {
            hexString.append(Integer.toHexString(0xFF & messageDigest[i]));
        }
        return hexString.toString();
    } catch (NoSuchAlgorithmException e) {
        e.printStackTrace();
        return senha;
    }
}