The Java Developers Almanac 1.4

e130. Parsing and Formatting a Big Integer into Binary, Octal, and Hexadecimal

    BigInteger bi = new BigInteger("1023");
    
    // Parse and format to binary
    bi = new BigInteger("1111111111", 2); // 1023
    String s = bi.toString(2);            // 1111111111
    
    // Parse and format to octal
    bi = new BigInteger("1777", 8);       // 1023
    s = bi.toString(8);                   // 1777
    
    // Parse and format to decimal
    bi = new BigInteger("1023");          // 1023
    s = bi.toString();                      // 1023
    
    // Parse and format to hexadecimal
    bi = new BigInteger("3ff", 16);       // 1023
    s = bi.toString(16);                  // 3ff
    
    // Parse and format to arbitrary radix <= Character.MAX_RADIX
    int radix = 32;
    bi = new BigInteger("vv", radix);     // 1023
    s = bi.toString(radix);               // vv

Related Examples

e126. Operating with Big Integer Values
e127. Operating with Big Decimal Values
e128. Setting the Decimal Place of a Big Decimal Value
e129. Performing Bitwise Operations with BigInteger
e131. Parsing and Formatting a Byte Array into Binary, Octal, and Hexadecimal


© 2002 Addison-Wesley.