Java ShortBuffer isDirect()方法及示例

java.nio.ShortBuffer 的 isDirect() 方法用于检查这个短缓冲区是否是直接的。

语法:

public abstract boolean isDirect()

返回值 ：当且仅当该缓冲区是直接的，该方法返回真。

下面的程序说明了 isDirect() 方法的使用。

程序1 :

// Java program to demonstrate
// isDirect() method
  
import java.nio.*;
import java.util.*;
  
public class GFG {
    public static void main(String[] args)
    {
  
        short[] array = { 10000, 10640, 10189, -2000, -16780 };
  
        // creating short array
        ShortBuffer shortBuf1 = ShortBuffer.wrap(array);
  
        // checking if the array is Direct or not
        if (shortBuf1.isDirect()) {
            System.out.println("Short buffer is direct.");
        }
        else {
            System.out.println("Short buffer is not direct.");
        }
    }
}

输出:

Short buffer is not direct.

程序2 :

// Java program to demonstrate
// isDirect() method
  
import java.nio.*;
import java.util.*;
  
public class GFG {
    public static void main(String[] args)
    {
  
        ByteBuffer b = ByteBuffer.allocateDirect(512);
  
        ShortBuffer shortBuf = b.asShortBuffer();
  
        // checking if the array is Direct or not
        if (shortBuf.isDirect()) {
            System.out.println("Short buffer is direct.");
        }
        else {
            System.out.println("Short buffer is not direct.");
        }
    }
}