Java 中的 ShortBuffer compact() 方法
可以使用 java.nio.ShortBuffer 中的 compact() 方法压缩缓冲区。此方法不需要参数,它返回新压缩后的 ShortBuffer,其内容与原始缓冲区相同。如果缓冲区只读,则会抛出 ReadOnlyBufferException。
下面给出了演示它的一个程序:-
示例
import java.nio.*; import java.util.*; public class Demo { public static void main(String[] args) { int n = 5; try { ShortBuffer buffer = ShortBuffer.allocate(n); buffer.put((short)25); buffer.put((short)18); buffer.put((short)30); System.out.println("The Original ShortBuffer is: " + Arrays.toString(buffer.array())); System.out.println("The position is: " + buffer.position()); System.out.println("The limit is: " + buffer.limit()); ShortBuffer bufferCompact = buffer.compact(); System.out.println("
The Compacted ShortBuffer is: " + Arrays.toString(bufferCompact.array())); System.out.println("The position is: " + bufferCompact.position()); System.out.println("The limit is: " + bufferCompact.limit()); } catch (IllegalArgumentException e) { System.out.println("Error!!! IllegalArgumentException"); } catch (ReadOnlyBufferException e) { System.out.println("Error!!! ReadOnlyBufferException"); } } }
上述程序的输出如下:-
输出
The Original ShortBuffer is: [25, 18, 30, 0, 0] The position is: 3 The limit is: 5 The Compacted ShortBuffer is: [0, 0, 30, 0, 0] The position is: 2 The limit is: 5
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