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The Java Developers Almanac 1.4Order this book from Amazon. |
e363. Performing Bitwise Operations on a Bit VectorTheBitSet class implements a bit-vector of an arbitrary size.
It automatically grows dynamically. This example demonstrates how to
create and use a BitSet .
The // Create the bitset BitSet bits = new BitSet(); // Set a bit on bits.set(2); // 100 = decimal 4 // Retrieving the value of a bit boolean b = bits.get(0); // false b = bits.get(2); // true // Clear a bit bits.clear(1); // Setting a range of bits BitSet bits2 = new BitSet(); bits2.set(1, 4); // 1110 // And'ing two bitsets bits.and(bits2); // 0100 // Xor'ing two bitsets bits.xor(bits2); // 1010 // Flip all bits in the bitset bits.flip(0, bits.length()); // 0101 // Andnot'ing two bitsets bits.andNot(bits2); // 0001 // Or'ing two bitsets bits.or(bits2); // 1111
© 2002 Addison-Wesley. |