Example usage for java.lang Integer toHexString

List of usage examples for java.lang Integer toHexString

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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

/**
 * Get the ip address for mesh usage(For mesh require the ip address hex uppercase without ".".
 * /*from  w  ww.  ja  v a2 s  . c  o  m*/
 * @param hostname the ip address, e.g. 192.168.1.2
 * @return ip address by hex without ".", e.g. C0A80102
 */
public static String getIpAddressForMesh(String hostname) {
    StringBuilder sb = new StringBuilder();
    String[] segments = hostname.split("\\.");
    int segment;
    String segmentHexStr;
    for (int i = 0; i < segments.length; i++) {
        // get the integer
        segment = Integer.parseInt(segments[i]);
        // transform the integer to hex
        segmentHexStr = Integer.toHexString(segment);
        // transform the hex string to uppercase
        segmentHexStr = segmentHexStr.toUpperCase(Locale.US);
        // append segmentHexStr to the sb
        if (segmentHexStr.length() == 1) {
            sb.append("0");
            sb.append(segmentHexStr);
        } else if (segmentHexStr.length() == 2) {
            sb.append(segmentHexStr);
        } else {
            throw new RuntimeException();
        }
    }
    return sb.toString();
}

From source file:Main.java

public static String toUtf8String(String s) {
    StringBuffer sb = new StringBuffer();
    for (int i = 0; i < s.length(); i++) {
        char c = s.charAt(i);
        if (c >= 0 && c <= 255) {
            sb.append(c);//  ww w  .j  a  va  2s. co m
        } else {
            byte[] b;
            try {
                b = String.valueOf(c).getBytes("utf-8");
            } catch (Exception ex) {
                System.out.println(ex);
                b = new byte[0];
            }
            for (int j = 0; j < b.length; j++) {
                int k = b[j];
                if (k < 0)
                    k += 256;
                sb.append("%" + Integer.toHexString(k).toUpperCase());
            }
        }
    }
    return sb.toString();
}

From source file:Main.java

public static String encryption(String plainText) {
    String re_md5 = "";
    try {/* www. j  a v  a 2 s  . co  m*/
        MessageDigest md = MessageDigest.getInstance("MD5");
        md.update(plainText.getBytes());
        byte b[] = md.digest();
        int i = 0;

        StringBuilder sb = new StringBuilder("");
        for (int offset = 0, len = b.length; offset < len; offset++) {
            i = b[offset];
            if (i < 0) {
                i += 256;
            }
            if (i < 16) {
                sb.append("0");
            }
            sb.append(Integer.toHexString(i));
        }
        re_md5 = sb.toString();

    } catch (NoSuchAlgorithmException e) {
        e.printStackTrace();
    }
    return re_md5;
}

From source file:Main.java

public static String stringToMD5(String string) {
    byte[] hash;/*from   w  ww  .j  a va 2  s  .  c  om*/

    try {
        hash = MessageDigest.getInstance("MD5").digest(string.getBytes("UTF-8"));
    } catch (NoSuchAlgorithmException e) {
        e.printStackTrace();
        return null;
    } catch (UnsupportedEncodingException e) {
        e.printStackTrace();
        return null;
    }

    StringBuilder hex = new StringBuilder(hash.length * 2);
    for (byte b : hash) {
        if ((b & 0xFF) < 0x10)
            hex.append("0");
        hex.append(Integer.toHexString(b & 0xFF));
    }
    return hex.toString();
}

From source file:Main.java

public static String stringToMD5(String string) {
    byte[] hash;//w  w w.j  a  va 2s .co m

    try {
        hash = MessageDigest.getInstance("MD5").digest(string.getBytes("UTF-8"));
    } catch (NoSuchAlgorithmException e) {
        e.printStackTrace();
        return null;
    } catch (UnsupportedEncodingException e) {
        e.printStackTrace();
        return null;
    }

    StringBuilder hex = new StringBuilder(hash.length * 2);
    for (byte b : hash) {
        if ((b & 0xFF) < 0x10)
            hex.append("0");
        hex.append(Integer.toHexString(b & 0xFF));
    }

    return hex.toString();
}

From source file:Main.java

public static String stringToMD5(String string) {
    byte[] hash;/*from www.j a  v a  2  s  .  co m*/

    try {
        hash = MessageDigest.getInstance("MD5").digest(string.getBytes("UTF-8"));
    } catch (NoSuchAlgorithmException e) {
        e.printStackTrace();
        return null;
    } catch (UnsupportedEncodingException e) {
        e.printStackTrace();
        return null;
    }

    StringBuilder hex = new StringBuilder(hash.length * 2);
    for (byte b : hash) {
        if ((b & 0xFF) < 0x10)
            hex.append("0");
        hex.append(Integer.toHexString(b & 0xFF));
    }

    return hex.toString().substring(8, 24);
}

From source file:Main.java

public static String[] convertToARGB(int color) {
    String alpha = Integer.toHexString(Color.alpha(color)).toUpperCase(Locale.getDefault());
    String red = Integer.toHexString(Color.red(color)).toUpperCase(Locale.getDefault());
    String green = Integer.toHexString(Color.green(color)).toUpperCase(Locale.getDefault());
    String blue = Integer.toHexString(Color.blue(color)).toUpperCase(Locale.getDefault());

    // we want the strings with a leading 0 if needed
    return new String[] { ("00" + alpha).substring(alpha.length()), ("00" + red).substring(red.length()),
            ("00" + green).substring(green.length()), ("00" + blue).substring(blue.length()) };
}

From source file:Componentes.EncryptionMD5.java

public static String toHexadecimal(byte[] digest) {
    String hash = "";
    for (byte aux : digest) {
        int b = aux & 0xff;
        if (Integer.toHexString(b).length() == 1)
            hash += "0";
        hash += Integer.toHexString(b);

    }//from  w w w  . ja  v a  2  s.co m
    return hash;
}

From source file:Main.java

private static String md5(final String s) {
    final String MD5 = "MD5";
    try {//from w  w w.j a va 2  s . co m
        MessageDigest digest = MessageDigest.getInstance(MD5);
        digest.update(s.getBytes());
        byte messageDigest[] = digest.digest();

        StringBuilder hexString = new StringBuilder();
        for (byte aMessageDigest : messageDigest) {
            String h = Integer.toHexString(0xFF & aMessageDigest);
            while (h.length() < 2)
                h = "0" + h;
            hexString.append(h);
        }
        return hexString.toString();
    } catch (NoSuchAlgorithmException e) {
        e.printStackTrace();
    }
    return "";
}

From source file:Main.java

public static String toHexString(Object object) {
    if (object == null) {
        return null;
    }//from  w  w  w  .j av a  2  s  .  com

    return Integer.toHexString(object.hashCode());
}