Introduction
In this article, we are going to describe one of the important classes of the util package in Java. So we explain the use of the BitSet class test; also what is the need of the bit class. A BitSet class creates a special type of array that holds bit values. This array can increase in size as needed. This makes it similar to a vector of bits.
BitSet Class
The BitSet class implements a vector of bits that can grow as needed. Each component of the bit set has a boolean value. The bits of a BitSet are indexed by nonnegative integers. Individual indexed bits can be examined, set, or cleared. One BitSet may be used to modify the contents of another BitSet through logical AND, logical inclusive OR, and logical exclusive OR operations.
Note: By default, all bits in the set initially have the value false. And something else to be concerned with is that when you pass a null parameter to any of the methods in a BitSet, that will result in a NullPointerException. A BitSet is not safe for multithreaded use without external synchronization.
BitSet Class Structure
- public class BitSet extends Object implements Cloneable, Serializable
BitSet Constructor Details
This class contains two constructors; one is a default constructor for creating default objects of a BitSet class and another is a constructor that takes as an int type one argument whose initial size is large enough to explicitly represent the bits with indices in the range 0 through nbits-1. All bits are initially false.
- public BitSet()
- public BitSet(int nbits)
BitSet Methods Details
Example
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