Java中的 ShortBuffer equals() 方法及示例

Java.nio.ShortBuffer类的equals()方法用于检查给定缓冲区是否等于另一个对象。

当且仅当，两个短缓冲区相等

• 它们具有相同的元素类型，
• 它们具有相同数量的剩余元素，并且
• 剩余元素的两个序列，独立于它们的起始位置考虑，是逐点的
  平等的。

短缓冲区不等于任何其他类型的对象。

语法：

public boolean equals(Object ob)

参数：此方法将要与此缓冲区进行比较的对象ob作为参数。

返回值：当且仅当此缓冲区等于给定对象时，此方法才返回true 。

以下是说明equals()方法的示例：

程序 1 ：

// Java program to demonstrate
// equals() method
  
import java.nio.*;
import java.util.*;
  
public class GFG {
  
    public static void main(String[] args)
    {
  
        // Declaring the capacity of the ShortBuffer 1
        int capacity1 = 10;
  
        // Declaring the capacity of the ShortBuffer 2
        int capacity2 = 10;
  
        // Creating the ShortBuffer
        try {
  
            // creating object of Shortbuffer 1
            // and allocating size capacity
            ShortBuffer sb1 = ShortBuffer.allocate(capacity1);
  
            // creating object of Shortbuffer 2
            // and allocating size capacity
            ShortBuffer fb2 = ShortBuffer.allocate(capacity2);
  
            // putting the value in Shortbuffer 1
            sb1.put((short)856);
            sb1.put(2, (short)961);
            sb1.rewind();
  
            // putting the value in Shortbuffer 2
            fb2.put((short)856);
            fb2.put(2, (short)961);
            fb2.rewind();
  
            // print the ShortBuffer 1
            System.out.println(" ShortBuffer 1: "
                               + Arrays.toString(sb1.array()));
  
            // print the ShortBuffer 2
            System.out.println(" ShortBuffer 2: "
                               + Arrays.toString(fb2.array()));
  
            // checking the equality of both ShortBuffer
            boolean fbb = sb1.equals(fb2);
  
            // checking if else condition
            if (fbb)
                System.out.println("both are equal");
            else
                System.out.println("both are not equal");
        }
  
        catch (IllegalArgumentException e) {
            System.out.println("IllegalArgumentException catched");
        }
  
        catch (ReadOnlyBufferException e) {
            System.out.println("ReadOnlyBufferException catched");
        }
    }
}

输出：

ShortBuffer 1: [856, 0, 961, 0, 0, 0, 0, 0, 0, 0]
ShortBuffer 2: [856, 0, 961, 0, 0, 0, 0, 0, 0, 0]

both are equal

方案二：

// Java program to demonstrate
// equals() method
  
import java.nio.*;
import java.util.*;
  
public class GFG {
  
    public static void main(String[] args)
    {
  
        // Declaring the capacity of the ShortBuffer 1
        int capacity1 = 10;
  
        // Declaring the capacity of the ShortBuffer 2
        int capacity2 = 5;
  
        // Creating the ShortBuffer
        try {
  
            // creating object of Shortbuffer 1
            // and allocating size capacity
            ShortBuffer sb1 = ShortBuffer.allocate(capacity1);
  
            // creating object of Shortbuffer 2
            // and allocating size capacity
            ShortBuffer sb2 = ShortBuffer.allocate(capacity2);
  
            // putting the value in Shortbuffer 1
            sb1.put((short)856);
            sb1.put(2, (short)961);
            sb1.rewind();
  
            // putting the value in Shortbuffer 2
            sb2.put((short)856);
            sb2.put(2, (short)431);
            sb2.rewind();
  
            // print the ShortBuffer 1
            System.out.println(" ShortBuffer 1: "
                               + Arrays.toString(sb1.array()));
  
            // print the ShortBuffer 2
            System.out.println(" ShortBuffer 2: "
                               + Arrays.toString(sb2.array()));
  
            // checking the equality of both ShortBuffer
            boolean fbb = sb1.equals(sb2);
  
            // checking if else condition
            if (fbb)
                System.out.println("both are equal");
            else
                System.out.println("both are not equal");
        }
  
        catch (IllegalArgumentException e) {
            System.out.println("IllegalArgumentException catched");
        }
  
        catch (ReadOnlyBufferException e) {
            System.out.println("ReadOnlyBufferException catched");
        }
    }
}

输出：

ShortBuffer 1: [856, 0, 961, 0, 0, 0, 0, 0, 0, 0]
ShortBuffer 2: [856, 0, 431, 0, 0]

both are not equal