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Java IntBuffer put()方法用法及代码示例


put(int i)

java.nio.IntBuffer类的put(int i)方法用于将给定的int写入当前位置的新创建的int缓冲区，然后递增该位置。

用法:

public abstract IntBuffer put(int i)

参数：此方法将int值i作为要写入int缓冲区的参数。



返回值：此方法返回此缓冲区，在其中插入int值。

异常：此方法引发以下异常：

  • BufferOverflowException-如果此缓冲区的当前位置不小于其限制
  • ReadOnlyBufferException-如果此缓冲区是只读的

以下是说明put(int i)方法的示例：

范例1：

// Java program to demonstrate 
// put() method 
  
import java.nio.*; 
import java.util.*; 
  
public class GFG { 
    public static void main(String[] args) 
    { 
  
        // Declaring the capacity of the IntBuffer 
        int capacity = 3; 
  
        // Creating the IntBuffer 
        try { 
  
            // creating object of Intbuffer 
            // and allocating size capacity 
            IntBuffer ib = IntBuffer.allocate(capacity); 
  
            // putting the value in Intbuffer using put() method 
            ib.put(8); 
            ib.put(9); 
            ib.put(7); 
            ib.rewind(); 
  
            // print the IntBuffer 
            System.out.println("Original IntBuffer:"
                               + Arrays.toString(ib.array())); 
        } 
  
        catch (BufferOverflowException e) { 
            System.out.println("Exception throws:" + e); 
        } 
  
        catch (ReadOnlyBufferException e) { 
            System.out.println("Exception throws:" + e); 
        } 
    } 
}
输出： 
Original IntBuffer:[8, 9, 7]

范例2：演示BufferOverflowException。

// Java program to demonstrate 
// put() method 
  
import java.nio.*; 
import java.util.*; 
  
public class GFG { 
    public static void main(String[] args) 
    { 
  
        // Declaring the capacity of the IntBuffer 
        int capacity = 3; 
  
        // Creating the IntBuffer 
        try { 
  
            // creating object of Intbuffer 
            // and allocating size capacity 
            IntBuffer ib = IntBuffer.allocate(capacity); 
  
            // putting the value in Intbuffer using put() method 
            ib.put(8); 
            ib.put(9); 
            ib.put(7); 
  
            System.out.println("Trying to put the Int at the "
                               + "position more than its limit"); 
            ib.put(7); 
  
            // rewind the Intbuffer 
            ib.rewind(); 
  
            // print the IntBuffer 
            System.out.println("Original IntBuffer:  "
                               + Arrays.toString(ib.array())); 
        } 
  
        catch (BufferOverflowException e) { 
            System.out.println("Exception throws:" + e); 
        } 
  
        catch (ReadOnlyBufferException e) { 
            System.out.println("Exception throws:" + e); 
        } 
    } 
}
输出： 
Trying to put the Int at the position more than its limit
Exception throws:java.nio.BufferOverflowException

范例3：演示ReadOnlyBufferException。

// Java program to demonstrate 
// put() method 
  
import java.nio.*; 
import java.util.*; 
  
public class GFG { 
    public static void main(String[] args) 
    { 
  
        // Declaring the capacity of the IntBuffer 
        int capacity = 3; 
  
        // Creating the IntBuffer 
        try { 
  
            // creating object of Intbuffer 
            // and allocating size capacity using allocate() method 
            IntBuffer ib = IntBuffer.allocate(capacity); 
  
            // Creating a read-only copy of IntBuffer 
            // using asReadOnlyBuffer() method 
            IntBuffer ib1 = ib.asReadOnlyBuffer(); 
  
            System.out.println("Trying to put the Int value"
                               + " in read only buffer"); 
  
            // putting the value in readonly Intbuffer 
            // using put() method 
            ib1.put(8); 
        } 
  
        catch (BufferOverflowException e) { 
            System.out.println("Exception throws:" + e); 
        } 
  
        catch (ReadOnlyBufferException e) { 
            System.out.println("Exception throws:" + e); 
        } 
    } 
}
输出： 
Trying to put the Int value in read only buffer
Exception throws:java.nio.ReadOnlyBufferException

put(int index, int i)

java.nio.IntBuffer类的put(int index，int i)方法用于将给定的int写入给定索引处的缓冲区。



用法:

public abstract IntBuffer put(int index, int i)

参数：此方法将以下参数作为参数：

  • index：将要写入int的索引
  • i：要写入的int值

返回值：此方法返回此缓冲区。

异常：此方法引发以下异常：

  • IndexOutOfBoundsException-如果索引为负或不小于缓冲区的限制
  • ReadOnlyBufferException-如果此缓冲区是只读的

以下示例说明了put(int index，int i)方法：

范例1：

// Java program to demonstrate 
// put() method 
  
import java.nio.*; 
import java.util.*; 
  
public class GFG { 
    public static void main(String[] args) 
    { 
  
        // Declaring the capacity of the IntBuffer 
        int capacity = 3; 
  
        // Creating the IntBuffer 
        try { 
  
            // creating object of Intbuffer 
            // and allocating size capacity 
            IntBuffer ib = IntBuffer.allocate(capacity); 
  
            // putting the value in Intbuffer using put() at  index 0 
            ib.put(0, 8); 
  
            // putting the value in Intbuffer using put() at  index 2 
            ib.put(2, 9); 
  
            // putting the value in Intbuffer using put() at  index 1 
            ib.put(1, 7); 
  
            // rewinding the Intbuffer 
            ib.rewind(); 
  
            // print the IntBuffer 
            System.out.println("Original IntBuffer:  "
                               + Arrays.toString(ib.array())); 
        } 
  
        catch (IndexOutOfBoundsException e) { 
            System.out.println("Exception throws:" + e); 
        } 
  
        catch (ReadOnlyBufferException e) { 
            System.out.println("Exception throws:" + e); 
        } 
    } 
}
输出： 
Original IntBuffer: [8, 7, 9]

范例2：演示IndexOutOfBoundsException。

// Java program to demonstrate 
// put() method 
  
import java.nio.*; 
import java.util.*; 
  
public class GFG { 
    public static void main(String[] args) 
    { 
  
        // Declaring the capacity of the IntBuffer 
        int capacity = 3; 
  
        // Creating the IntBuffer 
        try { 
  
            // creating object of Intbuffer 
            // and allocating size capacity 
            IntBuffer ib = IntBuffer.allocate(capacity); 
  
            // putting the value in Intbuffer 
            // using put() at  index 0 
            ib.put(0, 8); 
  
            // putting the value in Intbuffer 
            // using put() at  index 2 
            ib.put(2, 9); 
  
            // putting the value in Intbuffer 
            // using put() at  index -1 
            System.out.println("Trying to put the value"
                               + " at the negative index"); 
            ib.put(-1, 7); 
        } 
  
        catch (IndexOutOfBoundsException e) { 
            System.out.println("Exception throws:" + e); 
        } 
  
        catch (ReadOnlyBufferException e) { 
            System.out.println("Exception throws:" + e); 
        } 
    } 
}
输出： 
Trying to put the value at the negative index
Exception throws:java.lang.IndexOutOfBoundsException

范例3：演示ReadOnlyBufferException。

// Java program to demonstrate 
// put() method 
  
import java.nio.*; 
import java.util.*; 
  
public class GFG { 
    public static void main(String[] args) 
    { 
  
        // Declaring the capacity of the IntBuffer 
        int capacity = 3; 
  
        // Creating the IntBuffer 
        try { 
  
            // creating object of Intbuffer 
            // and allocating size capacity using allocate() method 
            IntBuffer ib = IntBuffer.allocate(capacity); 
  
            // Creating a read-only copy of IntBuffer 
            // using asReadOnlyBuffer() method 
            IntBuffer ib1 = ib.asReadOnlyBuffer(); 
  
            System.out.println("Trying to put the Int value"
                               + " in read only buffer"); 
  
            // putting the value in readonly Intbuffer 
            // using put() method 
            ib1.put(0, 8); 
        } 
  
        catch (BufferOverflowException e) { 
            System.out.println("Exception throws:" + e); 
        } 
  
        catch (ReadOnlyBufferException e) { 
            System.out.println("Exception throws:" + e); 
        } 
    } 
}
输出： 
Trying to put the Int value in read only buffer
Exception throws:java.nio.ReadOnlyBufferException



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注：本文由纯净天空筛选整理自nitin_sharma大神的英文原创作品 IntBuffer put() methods in Java | Set 1。非经特殊声明，原始代码版权归原作者所有，本译文未经允许或授权，请勿转载或复制。