ShortBuffer hasArray() 方法
使用 java.nio.ShortBuffer 类中的 hasArray() 方法可以检查缓冲区是否具有可访问的 short 数组的支持。如果缓冲区具有可访问的 double 数组的支持,此方法返回 true,否则返回 false。
一个演示此功能的程序如下 −
例子
import java.nio.*; import java.util.*; public class Demo { public static void main(String[] args) { int n = 5; try { ShortBuffer buffer = ShortBuffer.allocate(5); buffer.put((short)12); buffer.put((short)91); buffer.put((short)25); buffer.put((short)18); buffer.put((short)30); buffer.rewind(); System.out.println("The ShortBuffer is: " + Arrays.toString(buffer.array())); boolean flag = buffer.hasArray(); if (flag) System.out.println("The ShortBuffer is backed by an array"); else System.out.println("The ShortBuffer is not backed by any array"); } catch (IllegalArgumentException e) { System.out.println("Error!!! IllegalArgumentException"); } catch (ReadOnlyBufferException e) { System.out.println("Error!!! ReadOnlyBufferException"); } } }
输出
The ShortBuffer is: [12, 91, 25, 18, 30] The ShortBuffer is backed by an array
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