Java中的ByteBuffer asLongBuffer()方法
可以使用asLongBuffer()类java.nio.ByteBuffer中的方法将ByteBuffer的视图创建为LongBuffer。此方法不需要任何参数，并且根据需要返回一个长缓冲区。该缓冲区反映了对原始缓冲区所做的更改，反之亦然。
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 = 50;
try {
ByteBuffer bufferB = ByteBuffer.allocate(n);
LongBuffer bufferL = bufferB.asLongBuffer();
bufferL.put(5000);
bufferL.put(9000);
bufferL.put(2000);
bufferL.put(8000);
bufferL.put(3000);
bufferL.rewind();
long l;
System.out.print("The LongBuffer is: ");
while ((l = bufferL.get()) != 0) {
System.out.print(l + " ");
}
} catch (IllegalArgumentException e) {
System.out.println("Error!!! IllegalArgumentException");
} catch (ReadOnlyBufferException e) {
System.out.println("Error!!! ReadOnlyBufferException");
}
}
}输出结果
The LongBuffer is: 5000 9000 2000 8000 3000