java bitset_Java BitSet length（）方法与示例

痛定思痛。 2023-03-05 12:52 7阅读 0赞

java bitset

## BitSet类的length()方法 **(**BitSet Class length() method**)** ##

*  **length() method** is available in java.util package.
    
    **length()方法**在java.util包中可用。
 *  **length() method** is used to return the length of this BitSet otherwise it returns 0 when this BitSet is "empty".
    
    **length()方法**用于返回此BitSet的长度，否则当此BitSet为“空”时将返回0。
    
        Length= (The indices of largest set bit+1)
 *  **length() method** is a non-static method, so it is accessible with the class object and if we try to access the method with the class name then we will get an error.
    
    **length()方法**是一种非静态方法，因此可以通过类对象进行访问，如果尝试使用类名称访问该方法，则会收到错误消息。
 *  **length() method** does not throw an exception at the time of returning the length of this BitSet.
    
    返回此BitSet的长度时， **length()方法**不会引发异常。

**Syntax:**

**句法：**

public int length();

**Parameter(s):**

**参数：**

*  It does not accept any parameter.
    
    它不接受任何参数。

**Return value:**

**返回值：**

The return type of this method is int, it returns the size of this BitSet in integer.

此方法的返回类型为int ，它以整数形式返回此BitSet的大小。

**Example:**

**例：**

// Java program to demonstrate the example 
    // of int length() method of BitSet.
    
    import java.util.*;
    
    public class LengthOfBitSet {
        
        public static void main(String[] args) {
        
            // create an object of BitSet
            BitSet bs = new BitSet(10);
    
            // By using set() method is to set
            // the values in BitSet 
            bs.set(10);
            bs.set(20);
            bs.set(30);
            bs.set(40);
            bs.set(50);
    
            // Display Bitset
            System.out.println("bs: " + bs);
    
            // By using length() method is to return
            // the length of this BitSet
            int len = bs.length();
    
            // Display length of bs
            System.out.println("bs.length(): " + len);
        }
    }

**Output**

**输出量**

bs: {10, 20, 30, 40, 50}
    bs.length(): 51

> 翻译自: [https://www.includehelp.com/java/bitset-length-method-with-example.aspx][https_www.includehelp.com_java_bitset-length-method-with-example.aspx]

java bitset

[https_www.includehelp.com_java_bitset-length-method-with-example.aspx]: https://www.includehelp.com/java/bitset-length-method-with-example.aspx