Java 中 FloatBuffer 的 equals() 方法
可以使用 java.nio.FloatBuffer 类中 equals() 方法验证两个缓冲区的相等性。如果两个缓冲区的元素类型相同、元素数量相同且元素序列相同,则表示它们相等。equals() 方法在缓冲区相等时返回 true,否则返回 false。
以下示例对此进行了演示:
示例
import java.nio.*; import java.util.*; public class Demo { public static void main(String[] args) { int n = 5; try { FloatBuffer buffer1 = FloatBuffer.allocate(n); buffer1.put(4.5F); buffer1.put(1.2F); buffer1.put(3.9F); buffer1.put(7.5F); buffer1.put(5.8F); buffer1.rewind(); System.out.println("The first FloatBuffer is: " + Arrays.toString(buffer1.array())); FloatBuffer buffer2 = FloatBuffer.allocate(n); buffer2.put(4.5F); buffer2.put(1.2F); buffer2.put(3.9F); buffer2.put(7.5F); buffer2.put(5.8F); buffer2.rewind(); System.out.println("The second FloatBuffer is: " + Arrays.toString(buffer2.array())); boolean flag = buffer1.equals(buffer2); if (flag) System.out.println("
Both the buffers are equal"); else System.out.println("
Both the buffers are not equal"); } catch (IllegalArgumentException e) { System.out.println("Error!!! IllegalArgumentException"); } catch (ReadOnlyBufferException e) { System.out.println("Error!!! ReadOnlyBufferException"); } } }
上述程序的输出如下:
输出
The first FloatBuffer is: [4.5, 1.2, 3.9, 7.5, 5.8] The second FloatBuffer is: [4.5, 1.2, 3.9, 7.5, 5.8] Both the buffers are equal
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