Java中的ByteBuffer asDoubleBuffer()方法
可以使用asDoubleBuffer()类java.nio.ByteBuffer中的方法将ByteBuffer的视图创建为DoubleBuffer。此方法不需要任何参数，并且根据需要返回一个双缓冲区。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);
DoubleBuffer bufferD = bufferB.asDoubleBuffer();
bufferD.put(4.5D);
bufferD.put(1.2D);
bufferD.put(3.9D);
bufferD.put(7.5D);
bufferD.put(5.8D);
bufferD.rewind();
double d;
System.out.print("The DoubleBuffer is: ");
while ((d = bufferD.get()) != 0) {
System.out.print(d + " ");
}
} catch (IllegalArgumentException e) {
System.out.println("Error!!! IllegalArgumentException");
} catch (ReadOnlyBufferException e) {
System.out.println("Error!!! ReadOnlyBufferException");
}
}
}输出结果
The DoubleBuffer is: 4.5 1.2 3.9 7.5 5.8