From: Svjatoslav Agejenko <svjatoslav@svjatoslav.eu>
Date: Wed, 29 May 2013 15:04:19 +0000 (+0300)
Subject: byte array to HEX converter
X-Git-Tag: svjatoslavcommons-1.8~144
X-Git-Url: http://www2.svjatoslav.eu/gitweb/?a=commitdiff_plain;h=fff91edf05201dea6191c450eded1b711baa5493;p=svjatoslav_commons.git

byte array to HEX converter
---

diff --git a/src/main/java/eu/svjatoslav/commons/data/HexConverter.java b/src/main/java/eu/svjatoslav/commons/data/HexConverter.java
new file mode 100644
index 0000000..52b16f4
--- /dev/null
+++ b/src/main/java/eu/svjatoslav/commons/data/HexConverter.java
@@ -0,0 +1,21 @@
+package eu.svjatoslav.commons.data;
+
+public class HexConverter {
+
+	static final String hexCodes = "0123456789ABCDEF";
+
+	public static String byteArrayToHex(final byte[] raw) {
+
+		if (raw == null)
+			return null;
+
+		final StringBuilder result = new StringBuilder(2 * raw.length);
+
+		for (final byte b : raw)
+			result.append(hexCodes.charAt((b & 0xF0) >> 4)).append(
+					hexCodes.charAt((b & 0x0F)));
+
+		return result.toString();
+	}
+
+}
diff --git a/src/test/java/eu/svjatoslav/commons/data/HexConverterTest.java b/src/test/java/eu/svjatoslav/commons/data/HexConverterTest.java
new file mode 100644
index 0000000..2525f9b
--- /dev/null
+++ b/src/test/java/eu/svjatoslav/commons/data/HexConverterTest.java
@@ -0,0 +1,18 @@
+package eu.svjatoslav.commons.data;
+
+import static org.junit.Assert.assertEquals;
+
+import org.junit.Test;
+
+public class HexConverterTest {
+
+	@Test
+	public void test() {
+
+		final String string = HexConverter.byteArrayToHex(new byte[] { 1, 2,
+				(byte) 255 });
+
+		assertEquals("0102FF", string);
+
+	}
+}