DoubleBuffer equals() 方法在 Java 中
java.nio.DoubleBuffer 类中的 equals() 方法可用于检查两个缓冲区的相等性。如果两个缓冲区具有相同的元素类型、相同的元素数量以及相同的元素顺序,则它们是相等的。equals() 方法在缓冲区相等时返回 true,否则返回 false。
演示此方法的程序如下所示 −
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(n); 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 first DoubleBuffer is: " + Arrays.toString(buffer1.array())); DoubleBuffer buffer2 = DoubleBuffer.allocate(n); buffer2.put(4.5D); buffer2.put(1.2D); buffer2.put(3.9D); buffer2.put(7.5D); buffer2.put(5.8D); buffer2.rewind(); System.out.println("The second DoubleBuffer 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 DoubleBuffer is: [4.5, 1.2, 3.9, 7.5, 5.8] The second DoubleBuffer is: [4.5, 1.2, 3.9, 7.5, 5.8] Both the buffers are equal
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