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The Java Developers Almanac 1.4Order this book from Amazon. |
e131. Parsing and Formatting a Byte Array into Binary, Octal, and HexadecimalThis example uses aBigInteger to convert a byte array to a string of
binary, octal, or hexadecimal values.
// Get a byte array byte[] bytes = new byte[]{(byte)0x12, (byte)0x0F, (byte)0xF0}; // Create a BigInteger using the byte array BigInteger bi = new BigInteger(bytes); // Format to binary String s = bi.toString(2); // 100100000111111110000 // Format to octal s = bi.toString(8); // 4407760 // Format to decimal s = bi.toString(); // 1183728 // Format to hexadecimal s = bi.toString(16); // 120ff0 if (s.length() % 2 != 0) { // Pad with 0 s = "0"+s; } // Parse binary string bi = new BigInteger("100100000111111110000", 2); // Parse octal string bi = new BigInteger("4407760", 8); // Parse decimal string bi = new BigInteger("1183728"); // Parse hexadecimal string bi = new BigInteger("120ff0", 16); // Get byte array bytes = bi.toByteArray();
e127. Operating with Big Decimal Values e128. Setting the Decimal Place of a Big Decimal Value e129. Performing Bitwise Operations with BigInteger e130. Parsing and Formatting a Big Integer into Binary, Octal, and Hexadecimal © 2002 Addison-Wesley. |