Java 中的 ShortBuffer put(int，short)方法示例
原文:https://www . geesforgeks . org/short buffer-putint-short-method-in-Java-with-examples/
Java . nio . short buffer 类的 put() 方法用于在给定的索引处将给定的短消息写入该缓冲区。
语法:
public abstract ShortBuffer put(int index, short s)
参数:
- 索引:该参数指定写入做空的索引。它是可选的。
- s :该参数指定要写入的短数值
返回值:该方法返回该缓冲区。
例外:
- indexout of Boundsexception–如果索引为负或不小于缓冲区的限制。
- 只读缓冲区异常–如果该缓冲区是只读的
下面程序说明了放()的方法:
程序 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 ShortBuffer
int capacity = 3;
// Creating the ShortBuffer
try {
// creating object of shortbuffer
// and allocating size capacity
ShortBuffer sb
= ShortBuffer.allocate(capacity);
// putting the value in shortbuffer
// using put() at index 0
sb.put(0, (short)400);
// putting the value in shortbuffer
// using put() at index 2
sb.put(2, (short)1000);
// putting the value in shortbuffer
// using put() at index 1
sb.put(1, (short)30);
// rewinding the shortbuffer
sb.rewind();
// print the ShortBuffer
System.out.println("Original ShortBuffer: "
+ Arrays.toString(sb.array()));
}
catch (IndexOutOfBoundsException e) {
System.out.println("Exception throws: " + e);
}
catch (ReadOnlyBufferException e) {
System.out.println("Exception throws: " + e);
}
}
}
Output:
Original ShortBuffer: [400, 30, 1000]
程序 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 ShortBuffer
int capacity = 3;
// Creating the ShortBuffer
try {
// creating object of shortbuffer
// and allocating size capacity
ShortBuffer sb
= ShortBuffer.allocate(capacity);
// putting the value in shortbuffer
// using put() at index 0
sb.put(0, (short)31);
// putting the value in shortbuffer
// using put() at index 2
sb.put(2, (short)49);
// putting the value in shortbuffer
// using put() at index -1
System.out.println("Trying to put the value"
+ " at the negative index");
sb.put(-1, (short)27);
}
catch (IndexOutOfBoundsException e) {
System.out.println("Exception throws: " + e);
}
catch (ReadOnlyBufferException e) {
System.out.println("Exception throws: " + e);
}
}
}
Output:
Trying to put the value at the negative index
Exception throws: java.lang.IndexOutOfBoundsException
程序 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 ShortBuffer
int capacity = 3;
// Creating the ShortBuffer
try {
// creating object of shortbuffer
// and allocating size capacity
// using allocate() method
ShortBuffer sb
= ShortBuffer.allocate(capacity);
// Creating a read-only copy of ShortBuffer
// using asReadOnlyBuffer() method
ShortBuffer sb1 = sb.asReadOnlyBuffer();
System.out.println("Trying to put the float value"
+ " in read only buffer");
// putting the value in readonly shortbuffer
// using put() method
sb1.put(0, (short)13);
}
catch (BufferOverflowException e) {
System.out.println("Exception throws: " + e);
}
catch (ReadOnlyBufferException e) {
System.out.println("Exception throws: " + e);
}
}
}
Output:
Trying to put the float value in read only buffer
Exception throws: java.nio.ReadOnlyBufferException
参考:https://docs . Oracle . com/javase/9/docs/API/Java/nio/short buffer . html # put-int-short-
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