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<TITLE>Parsing and Formatting a Byte Array into Binary, Octal, and Hexadecimal (Java Developers Almanac Example)
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    <B><A HREF="../java.math/pkg.html">java.math</A></B><font color="#666666" class="xsmall-font">
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  <h3>e131. Parsing and Formatting a Byte Array into Binary, Octal, and Hexadecimal</h3>

This example uses a <code>BigInteger</code> to convert a byte array to a string of
binary, octal, or hexadecimal values.


<pre>    // Get a byte array
    byte[] bytes = new byte[]{(byte)<font color="#0066ff"><i>0x12</i></font>, (byte)<font color="#0066ff"><i>0x0F</i></font>, (byte)<font color="#0066ff"><i>0xF0</i></font>};
    
    // 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(<font color="#0066ff"><i>"100100000111111110000"</i></font>, 2);
    
    // Parse octal string
    bi = new BigInteger(<font color="#0066ff"><i>"4407760"</i></font>, 8);
    
    // Parse decimal string
    bi = new BigInteger(<font color="#0066ff"><i>"1183728"</i></font>);
    
    // Parse hexadecimal string
    bi = new BigInteger(<font color="#0066ff"><i>"120ff0"</i></font>, 16);
    
    // Get byte array
    bytes = bi.toByteArray();
</pre>
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            &nbsp;<b>Related Examples</b></font></td>
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e126. <a class="eglink" href="AddBigInt.html?l=rel">
    Operating with Big Integer Values
</a>
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e127. <a class="eglink" href="AddBigDec.html?l=rel">
    Operating with Big Decimal Values
</a>
<br>

e128. <a class="eglink" href="PrintBigDec.html?l=rel">
    Setting the Decimal Place of a Big Decimal Value
</a>
<br>

e129. <a class="eglink" href="Bits.html?l=rel">
    Performing Bitwise Operations with BigInteger
</a>
<br>

e130. <a class="eglink" href="ConvertNum2.html?l=rel">
    Parsing and Formatting a Big Integer into Binary, Octal, and Hexadecimal
</a>
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