Java/Data Type/String Hex
Converts bytes to a hex string
<source lang="java">
/* Copyright 2004 The Apache Software Foundation
* * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */
//xmlbeans import java.io.UnsupportedEncodingException; /**
* format validation * * This class encodes/decodes hexadecimal data * @author Jeffrey Rodriguez * @version $Id: HexBin.java 125124 2005-01-14 00:23:54Z kkrouse $ */
public class Main {
static private final int BASELENGTH = 255; static private final int LOOKUPLENGTH = 16; static private byte [] hexNumberTable = new byte[BASELENGTH]; static private byte [] lookUpHexAlphabet = new byte[LOOKUPLENGTH];
static { for (int i = 0; i<BASELENGTH; i++ ) { hexNumberTable[i] = -1; } for ( int i = "9"; i >= "0"; i--) { hexNumberTable[i] = (byte) (i-"0"); } for ( int i = "F"; i>= "A"; i--) { hexNumberTable[i] = (byte) ( i-"A" + 10 ); } for ( int i = "f"; i>= "a"; i--) { hexNumberTable[i] = (byte) ( i-"a" + 10 ); } for(int i = 0; i<10; i++ ) lookUpHexAlphabet[i] = (byte) ("0"+i ); for(int i = 10; i<=15; i++ ) lookUpHexAlphabet[i] = (byte) ("A"+i -10); } /** * Converts bytes to a hex string */ static public String bytesToString(byte[] binaryData) { if (binaryData == null) return null; return new String(encode(binaryData)); } /** * array of byte to encode * * @param binaryData * @return return encode binary array */ static public byte[] encode(byte[] binaryData) { if (binaryData == null) return null; int lengthData = binaryData.length; int lengthEncode = lengthData * 2; byte[] encodedData = new byte[lengthEncode]; for( int i = 0; i<lengthData; i++ ){ encodedData[i*2] = lookUpHexAlphabet[(binaryData[i] >> 4) & 0xf]; encodedData[i*2+1] = lookUpHexAlphabet[ binaryData[i] & 0xf]; } return encodedData; }
}
</source>
Encode a byte array to hex string
<source lang="java">
/*
* Licensed to the Apache Software Foundation (ASF) under one or more * contributor license agreements. See the NOTICE file distributed with * this work for additional information regarding copyright ownership. * The ASF licenses this file to You under the Apache License, Version 2.0 * (the "License"); you may not use this file except in compliance with * the License. You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */
/**
* format validation * * This class encodes/decodes hexadecimal data * * @xerces.internal * * @author Jeffrey Rodriguez * @version $Id: HexBin.java 446747 2006-09-15 21:46:20Z mrglavas $ */
public final class HexBin {
static private final int BASELENGTH = 128; static private final int LOOKUPLENGTH = 16; static final private byte [] hexNumberTable = new byte[BASELENGTH]; static final private char [] lookUpHexAlphabet = new char[LOOKUPLENGTH];
static { for (int i = 0; i < BASELENGTH; i++ ) { hexNumberTable[i] = -1; } for ( int i = "9"; i >= "0"; i--) { hexNumberTable[i] = (byte) (i-"0"); } for ( int i = "F"; i>= "A"; i--) { hexNumberTable[i] = (byte) ( i-"A" + 10 ); } for ( int i = "f"; i>= "a"; i--) { hexNumberTable[i] = (byte) ( i-"a" + 10 ); } for(int i = 0; i<10; i++ ) { lookUpHexAlphabet[i] = (char)("0"+i); } for(int i = 10; i<=15; i++ ) { lookUpHexAlphabet[i] = (char)("A"+i -10); } } /** * Encode a byte array to hex string * * @param binaryData array of byte to encode * @return return encoded string */ static public String encode(byte[] binaryData) { if (binaryData == null) return null; int lengthData = binaryData.length; int lengthEncode = lengthData * 2; char[] encodedData = new char[lengthEncode]; int temp; for (int i = 0; i < lengthData; i++) { temp = binaryData[i]; if (temp < 0) temp += 256; encodedData[i*2] = lookUpHexAlphabet[temp >> 4]; encodedData[i*2+1] = lookUpHexAlphabet[temp & 0xf]; } return new String(encodedData); }
}
</source>
Gets a hex string from byte array.
<source lang="java">
/*
* Licensed to the Apache Software Foundation (ASF) under one * or more contributor license agreements. See the NOTICE file * distributed with this work for additional information * regarding copyright ownership. The ASF licenses this file * to you under the Apache License, Version 2.0 (the * "License"); you may not use this file except in compliance * with the License. You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, * software distributed under the License is distributed on an * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY * KIND, either express or implied. See the License for the * specific language governing permissions and limitations * under the License. * */
/**
* Various string manipulation methods that are more efficient then chaining * string operations: all is done in the same buffer without creating a bunch of * string objects. * * @author */
public class Main {
/** * Gets a hex string from byte array. * * @param res * the byte array * @return the hex string representing the binary values in the array */ public static final String toHexString( byte[] res ) { StringBuffer buf = new StringBuffer( res.length << 1 ); for ( int ii = 0; ii < res.length; ii++ ) { String digit = Integer.toHexString( 0xFF & res[ii] ); if ( digit.length() == 1 ) { digit = "0" + digit; } buf.append( digit ); } return buf.toString().toUpperCase(); }
}
</source>