Java BitSet size() method7 Jan 2025 | 1 min read The size() method of Java BitSet class returns the total number of bit space actually in use by this BitSet to represent bit values. The maximum element in the set is the size - 1st element. The default size of the bit set is 64-bit space. If the bit is set at index larger than the current BitSet size, it increases its bit space in the multiplication of 64*n, where n starts from 1, 2, 3, so on. Syntax:Parameter:NA Returns:This method returns the number of bits space currently in this bit set. Exception:NA Compatibility Version:Java 1.0 and above Example 1Output:
bitset1: {1, 2, 4, 63}
bitset2: {10, 20, 30, 40, 64}
size of bitset1: 64
size of bitset2: 128
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The toByteArray() method of Java BitSet class returns a new byte array which contains all of its bits. This method works on the basis of following algorithm: byte[] bytes = bitset.toByteArray(); then bytes.length == (bitset.length()+7)/8 and bitset.get(n) == ((bytes[n/8] & (1<<(n%8))) != 0) for all n <...
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The clear() method of Java BitSet class is used to set the bits in the BitSet to false. There are various overloaded clear() methods available in BitSet class. 1. The clear() method set all the bits in the BitSet to false. 2. Java BitSet clear(int bitIndex) method The...
3 min read
The flip() method of Java BitSet class sets the bit set to its complement. For example, if a bit value contains a true value then if you apply flip() operation on it, it will return false. There are two overloaded flip() method available in BitSet class....
2 min read
Java BitSet iousSetBit() method The iousSetBit(int fromIndex) method of Java BitSet class returns the index of the nearest bit which is set to true that occurs on or before the specified index. It returns -1 if the specified index is negative or no such set bit...
1 min read
The valueOf() method of Java BitSet class returns a new bit set which contains all the set bit of given parameter. Syntax: public static BitSet valueOf(byte[] bytes) public static BitSet valueOf(long[] longs) public static BitSet valueOf(ByteBuffer bb) public static BitSet valueOf(LongBuffer lb) Parameter: DataType Parameter Description byte bytes[] It is a byte array represents a sequence...
2 min read
The toLongArray() method of Java BitSet class returns a new long array which contains all the bits of this bit set. This method works on the basis of following algorithm: long[] longs = bitset.toLongArray(); then longs.length == (bitset.length()+63)/64 and bitset.get(n) == ((longs[n/64] & (1L<<(n%64))) != 0) for all...
1 min read
The set() method of Java BitSet class is used to set the bit value to true at the specified index. There are various overloaded set() method available in BitSet class. These methods are differentiated on the basis of their parameters. Syntax: public void set(int bitIndex) public void set(int...
2 min read
The toString() method of Java BitSet class returns a string representation of this bit set. The indexes of set bit are returned from lower index to higher index. These set bit are separated by a comma and space ", " surrounded by curly braces. Syntax: public String...
1 min read
The equals() method of Java BitSet class is used to compare the current BitSet object with specified object. The result of comparing BitSet bit with BitSet object returns true if and only if the specified object is not null and the set of BitSet object...
3 min read
The get() method of Java BitSet class returns the bit value. There are two overloaded get() method available in BitSet class. 1. Java BitSet get(int bitIndex) method The get(int bitIndex) method returns the bit value of the specified index. It returns true if the index bitIndex is...
2 min read
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