IntBuffer 中的 slice() 方法
可以透過 java.nio.IntBuffer 類中的 slice() 方法建立新的 IntBuffer,其內容作為原始 IntBuffer 的共享子序列。如果原始緩衝區是隻讀的,這個方法將返回新的只讀 IntBuffer;如果原始緩衝區是直接的,它將返回直接 IntBuffer。
演示此方法的程式如下 −
示例
import java.nio.*; import java.util.*; public class Demo { public static void main(String[] args) { int n = 5; try { IntBuffer buffer1 = IntBuffer.allocate(n); buffer1.put(3); buffer1.put(7); buffer1.put(5); System.out.println("The Original IntBuffer is: " + Arrays.toString(buffer1.array())); System.out.println("The position is: " + buffer1.position()); System.out.println("The limit is: " + buffer1.limit()); IntBuffer buffer2 = buffer1.slice(); System.out.println("
The Subsequence IntBuffer is: " + Arrays.toString(buffer2.array())); System.out.println("The position is: " + buffer2.position()); System.out.println("The limit is: " + buffer2.limit()); } catch (IllegalArgumentException e) { System.out.println("Error!!! IllegalArgumentException"); } catch (ReadOnlyBufferException e) { System.out.println("Error!!! ReadOnlyBufferException"); } } }
上述程式的輸出如下 −
輸出
The Original IntBuffer is: [3, 7, 5, 0, 0] The position is: 3 The limit is: 5 The Subsequence IntBuffer is: [3, 7, 5, 0, 0] The position is: 0 The limit is: 2
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