Java中的ShortBuffer asReadOnlyBuffer()方法
可以使用asReadOnlyBuffer()java.nio.ShortBuffer类中的方法使用缓冲区的内容来创建只读短缓冲区。新缓冲区不能做任何修改，因为它是只读缓冲区。但是，新缓冲区的容量，位置，限制等与先前的缓冲区相同。
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 Original ShortBuffer is: " + Arrays.toString(buffer.array()));
ShortBuffer roBuffer = buffer.asReadOnlyBuffer();
System.out.println("The ReadOnlyBuffer ShortBuffer is: ");
while (roBuffer.hasRemaining())
System.out.print(roBuffer.get() + " ");
} catch (IllegalArgumentException e) {
System.out.println("Error!!! IllegalArgumentException");
} catch (ReadOnlyBufferException e) {
System.out.println("Error!!! ReadOnlyBufferException");
}
}
}上面程序的输出如下-
输出结果
The Original ShortBuffer is: [12, 91, 25, 18, 30] The ReadOnlyBuffer ShortBuffer is: 12 91 25 18 30