Java中的DoubleBufferplicate()方法
可以使用类java.nio.DoubleBuffer中的duplicate()方法创建缓冲区的重复缓冲区。此重复缓冲区与原始缓冲区相同。方法duplicate()返回创建的重复缓冲区。
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 {
DoubleBuffer buffer1 = DoubleBuffer.allocate(5);
buffer1.put(4.5D);
buffer1.put(1.2D);
buffer1.put(3.9D);
buffer1.put(7.5D);
buffer1.put(5.8D);
buffer1.rewind();
System.out.println("The Original DoubleBuffer is: " + Arrays.toString(buffer1.array()));
DoubleBuffer buffer2 = buffer1.duplicate();
System.out.print("The Duplicate DoubleBuffer is: " + Arrays.toString(buffer2.array()));
} 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 DoubleBuffer is: [4.5, 1.2, 3.9, 7.5, 5.8] The Duplicate DoubleBuffer is: [4.5, 1.2, 3.9, 7.5, 5.8]