Java ShortBuffer duplicate()用法及代碼示例

java.nio.ShortBuffer類的duplicate()方法創建一個共享該緩衝區內容的新的short緩衝區。

新緩衝區的內容就是該緩衝區的內容。對該緩衝區內容的更改將在新緩衝區中可見，反之亦然；這兩個緩衝區的位置，限製和標記值將是獨立的。新緩衝區的容量，限製，位置和標記值將與此緩衝區相同。當且僅當該緩衝區是直接緩衝區時，新緩衝區才是直接緩衝區；當且僅當該緩衝區是隻讀緩衝區時，新緩衝區才是隻讀緩衝區。

用法：

public abstract ShortBuffer duplicate()

返回值：此方法返回新的ShortBuffer。

以下示例程序旨在說明duplicate()方法：

程序1：

// Java program to demonstrate 
// compareTo() method 
  
import java.nio.*; 
import java.util.*; 
  
public class GFG { 
    public static void main(String[] args) 
    { 
        // Declaring the capacity of the sb 
        int capacity1 = 10; 
        // Creating the ShortBuffer 
  
        // creating object of shortbuffer sb 
        // and allocating size capacity 
        ShortBuffer sb1 = ShortBuffer.allocate(capacity1); 
  
        // putting the value in sb 
        sb1.put((short)100); 
        sb1.put((short)400); 
        sb1.put((short)210); 
  
        // revind the short buffer 
        sb1.rewind(); 
  
        // print the Original ShortBuffer 
        System.out.println("Original ShortBuffer:  "
                           + Arrays.toString(sb1.array())); 
  
        // creating duplicate 
        ShortBuffer sb2 = sb1.duplicate(); 
  
        // print the duplicate copy of ShortBuffer 
        System.out.println("Duplicate ShortBuffer: "
                           + Arrays.toString(sb2.array())); 
  
        // checking if the duplicate is correct or not 
        System.out.println("are sb1 and sb2 equal: "
                           + sb1.equals(sb2)); 
    } 
}

輸出：

Original ShortBuffer:  [100, 400, 210, 0, 0, 0, 0, 0, 0, 0]
Duplicate ShortBuffer: [100, 400, 210, 0, 0, 0, 0, 0, 0, 0]
are sb1 and sb2 equal: true

程序2：

// Java program to demonstrate 
// compareTo() method 
  
import java.nio.*; 
import java.util.*; 
  
public class GFG { 
    public static void main(String[] args) 
    { 
  
        // Declaring the capacity of the sb 
        int capacity1 = 10; 
  
        // Creating the ShortBuffer 
  
        // creating object of shortbuffer sb 
        // and allocating size capacity 
        ShortBuffer sb1 = ShortBuffer.allocate(capacity1); 
        ShortBuffer sb3 = ShortBuffer.allocate(capacity1); 
  
        // putting the value in sb 
        sb1.put((short)100); 
        sb1.put((short)400); 
        sb1.put((short)210); 
  
        // revind the short buffer 
        sb1.rewind(); 
  
        // print the Original ShortBuffer 
        System.out.println("Original ShortBuffer:  "
                           + Arrays.toString(sb1.array())); 
  
        // creating duplicate 
        ShortBuffer sb2 = sb1.duplicate(); 
  
        // print the duplicate copy of ShortBuffer 
        System.out.println("Duplicate ShortBuffer: "
                           + Arrays.toString(sb2.array())); 
  
        // checking if the duplicate is correct or not 
        System.out.println("are sb1 and sb2 equal: "
                           + sb1.equals(sb2)); 
  
        // checking if the duplicate is correct or not 
        System.out.println("are sb2 and sb3 equal: "
                           + sb2.equals(sb3)); 
    } 
}

輸出：

Original ShortBuffer:  [100, 400, 210, 0, 0, 0, 0, 0, 0, 0]
Duplicate ShortBuffer: [100, 400, 210, 0, 0, 0, 0, 0, 0, 0]
are sb1 and sb2 equal: true
are sb2 and sb3 equal: false

相關用法

注：本文由純淨天空篩選整理自IshwarGupta大神的英文原創作品 ShortBuffer duplicate() method in Java With Examples。非經特殊聲明，原始代碼版權歸原作者所有，本譯文未經允許或授權，請勿轉載或複製。