Java ShortBuffer slice()用法及代码示例

java.nio.ShortBuffer类的slice()方法用于创建一个新的short缓冲区，该缓冲区的内容是该缓冲区内容的共享子序列。
新缓冲区的内容将从该缓冲区的当前位置开始。对该缓冲区内容的更改将在新缓冲区中可见，反之亦然；这两个缓冲区的位置，限制和标记值将是独立的。
新缓冲区的位置将为零，其容量和限制将是该缓冲区中剩余的短裤数，并且其标记将不确定。当且仅当该缓冲区是直接缓冲区时，新缓冲区才是直接缓冲区；当且仅当该缓冲区是只读缓冲区时，新缓冲区才是只读缓冲区。

用法：

public abstract ShortBuffer slice()

返回值：此方法返回新的short缓冲区。

下面是说明slice()方法的示例：

程序1：

// Java program to demonstrate 
// slice() method 
  
import java.nio.*; 
import java.util.*; 
  
public class GFG { 
  
    public static void main(String[] args) 
    { 
  
        // Declaring the capacity of the ShortBuffer 
        int capacity = 10; 
  
        // Creating the ShortBuffer 
        try { 
  
            // creating object of Shortbuffer 
            // and allocating size capacity 
            ShortBuffer sb1 = ShortBuffer.allocate(capacity); 
  
            // putting the value in Shortbuffer 
            sb1.put((short)856); 
            sb1.put((short)961); 
  
            // print the ShortBuffer 
            System.out.println("Original ShortBuffer: "
                               + Arrays.toString(sb1.array())); 
  
            // print the ShortBuffer position 
            System.out.println("\nposition: " + sb1.position()); 
  
            // print the ShortBuffer capacity 
            System.out.println("\ncapacity: " + sb1.capacity()); 
  
            // Creating a shared subsequance buffer of given ShortBuffer 
            // using slice() method 
            ShortBuffer sb2 = sb1.slice(); 
  
            // print the shared subsequance buffer 
            System.out.println("\nshared subsequance ShortBuffer: "
                               + Arrays.toString(sb2.array())); 
  
            // print the ShortBuffer position 
            System.out.println("\nposition: " + sb2.position()); 
  
            // print the ShortBuffer capacity 
            System.out.println("\ncapacity: " + sb2.capacity()); 
        } 
  
        catch (IllegalArgumentException e) { 
  
            System.out.println("IllegalArgumentException catched"); 
        } 
  
        catch (ReadOnlyBufferException e) { 
  
            System.out.println("ReadOnlyBufferException catched"); 
        } 
    } 
}

输出：

Original ShortBuffer: [856, 961, 0, 0, 0, 0, 0, 0, 0, 0]

position: 2

capacity: 10

shared subsequance ShortBuffer: [856, 961, 0, 0, 0, 0, 0, 0, 0, 0]

position: 0

capacity: 8

程序2：

// Java program to demonstrate 
// slice() method 
  
import java.nio.*; 
import java.util.*; 
  
public class GFG { 
  
    public static void main(String[] args) 
    { 
  
        // Declaring the capacity of the ShortBuffer 
        int capacity = 10; 
  
        // Creating the ShortBuffer 
        try { 
  
            // creating object of Shortbuffer 
            // and allocating size capacity 
            ShortBuffer sb1 = ShortBuffer.allocate(capacity); 
  
            // putting the value in Shortbuffer 
            sb1.put((short)856); 
            sb1.put((short)961); 
            sb1.put((short)656); 
            sb1.put((short)361); 
  
            // print the ShortBuffer 
            System.out.println("Original ShortBuffer: "
                               + Arrays.toString(sb1.array())); 
  
            // print the ShortBuffer position 
            System.out.println("\nposition: " + sb1.position()); 
  
            // print the ShortBuffer capacity 
            System.out.println("\ncapacity: " + sb1.capacity()); 
  
            // Creating a shared subsequance buffer of given ShortBuffer 
            // using slice() method 
            ShortBuffer sb2 = sb1.slice(); 
            sb2.put((short)234); 
            sb2.put((short)634); 
  
            // print the shared subsequance buffer 
            System.out.println("\nshared subsequance ShortBuffer: "
                               + Arrays.toString(sb2.array())); 
  
            // print the ShortBuffer position 
            System.out.println("\nposition: " + sb2.position()); 
  
            // print the ShortBuffer capacity 
            System.out.println("\ncapacity: " + sb2.capacity()); 
        } 
  
        catch (IllegalArgumentException e) { 
  
            System.out.println("IllegalArgumentException catched"); 
        } 
  
        catch (ReadOnlyBufferException e) { 
  
            System.out.println("ReadOnlyBufferException catched"); 
        } 
    } 
}

输出：

Original ShortBuffer: [856, 961, 656, 361, 0, 0, 0, 0, 0, 0]

position: 4

capacity: 10

shared subsequance ShortBuffer: [856, 961, 656, 361, 234, 634, 0, 0, 0, 0]

position: 2

capacity: 6

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注：本文由纯净天空筛选整理自IshwarGupta大神的英文原创作品 ShortBuffer slice() method in Java with Examples。非经特殊声明，原始代码版权归原作者所有，本译文未经允许或授权，请勿转载或复制。