Java中的ByteBuffer get()方法
读取缓冲区当前位置的值，然后使用get()java.nio.ByteBuffer类中的方法将其递增。此方法返回当前缓冲区位置上的值。另外，如果发生下溢情况，则抛出BufferUnderflowException。
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 {
ByteBuffer buffer = ByteBuffer.allocate(n);
buffer.put((byte)1);
buffer.put((byte)2);
buffer.put((byte)3);
buffer.put((byte)4);
buffer.put((byte)5);
buffer.rewind();
System.out.println("The ByteBuffer is: " + Arrays.toString(buffer.array()));
byte val1 = buffer.get();
System.out.println("\nThe value at current position of ByteBuffer is: " + val1);
byte val2 = buffer.get();
System.out.println("The value at next position of ByteBuffer is: " + val2);
} catch (IllegalArgumentException e) {
System.out.println("Error!!! IllegalArgumentException");
} catch (ReadOnlyBufferException e) {
System.out.println("Error!!! ReadOnlyBufferException");
} catch (BufferUnderflowException e) {
System.out.println("Error!!! BufferUnderflowException");
}
}
}输出结果
The ByteBuffer is: [1, 2, 3, 4, 5] The value at current position of ByteBuffer is: 1 The value at next position of ByteBuffer is: 2