Java中的ShortBuffer hasArray()方法
通过使用hasArray()类java.nio.ShortBuffer中的方法，可以检查缓冲区是否具有可访问的短数组的支持。如果缓冲区具有可访问的double数组的支持，则此方法返回true，否则返回false。
演示此的程序如下所示-
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(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");
}
}
}输出结果
The ShortBuffer is: [12, 91, 25, 18, 30] The ShortBuffer is backed by an array