java.nio.ShortBuffer類的rewind()方法用於倒帶此緩衝區。通過倒帶此Buffer,可以執行以下操作:
- 當前位置設置為零
- 如果有標記,則將其丟棄,但標記值不變。
用法:
public ShortBuffer rewind()
參數:此方法不接受任何參數。
返回值:此方法返回此緩衝區。
下麵是說明rewind()方法的示例:
範例1:
// Java program to demonstrate
// rewind() method
import java.nio.*;
import java.util.*;
public class GFG {
public static void main(String[] args)
{
// defining and allocating ShortBuffer
// using allocate() method
ShortBuffer shortBuffer
= ShortBuffer.allocate(4);
// put short value in shortBuffer
// using put() method
shortBuffer.put((short)10);
shortBuffer.put((short)20);
// print the short buffer
System.out.println(
"Buffer before operation: "
+ Arrays.toString(
shortBuffer.array())
+ "\nPosition: "
+ shortBuffer.position()
+ "\nLimit: "
+ shortBuffer.limit());
// rewind the Buffer
// using rewind() method
shortBuffer.rewind();
// print the shortbuffer
System.out.println(
"\nBuffer after operation: "
+ Arrays.toString(
shortBuffer.array())
+ "\nPosition: "
+ shortBuffer.position()
+ "\nLimit: "
+ shortBuffer.limit());
}
}
輸出:
Buffer before operation: [10, 20, 0, 0] Position: 2 Limit: 4 Buffer after operation: [10, 20, 0, 0] Position: 0 Limit: 4
範例2:
// Java program to demonstrate
// rewind() method
import java.nio.*;
import java.util.*;
public class GFG {
public static void main(String[] args)
{
// defining and allocating ShortBuffer
// using allocate() method
ShortBuffer shortBuffer
= ShortBuffer.allocate(5);
// put short value in shortBuffer
// using put() method
shortBuffer.put((short)10);
shortBuffer.put((short)20);
shortBuffer.put((short)30);
// mark will be going to discarded by rewind()
shortBuffer.mark();
// print the buffer
System.out.println(
"Buffer before operation: "
+ Arrays.toString(
shortBuffer.array())
+ "\nPosition: "
+ shortBuffer.position()
+ "\nLimit: "
+ shortBuffer.limit());
// Rewind the Buffer
// using rewind() method
shortBuffer.rewind();
// print the buffer
System.out.println(
"\nBuffer after operation: "
+ Arrays.toString(
shortBuffer.array())
+ "\nPosition: "
+ shortBuffer.position()
+ "\nLimit: "
+ shortBuffer.limit());
}
}
輸出:
Buffer before operation: [10, 20, 30, 0, 0] Position: 3 Limit: 5 Buffer after operation: [10, 20, 30, 0, 0] Position: 0 Limit: 5
參考: https://docs.oracle.com/javase/9/docs/api/java/nio/ShortBuffer.html#rewind–
相關用法
- Java ShortBuffer toString()用法及代碼示例
- Java ShortBuffer mark()用法及代碼示例
- Java ShortBuffer order()用法及代碼示例
- Java ShortBuffer equals()用法及代碼示例
- Java ShortBuffer duplicate()用法及代碼示例
- Java ShortBuffer hasArray()用法及代碼示例
- Java ShortBuffer array()用法及代碼示例
- Java ShortBuffer isDirect()用法及代碼示例
- Java ShortBuffer slice()用法及代碼示例
- Java ShortBuffer compareTo用法及代碼示例
- Java ShortBuffer asReadOnlyBuffer()用法及代碼示例
- Java ShortBuffer put(int, short)用法及代碼示例
- Java ShortBuffer compact()用法及代碼示例
- Java ShortBuffer arrayOffset()用法及代碼示例
- Java ShortBuffer hashCode()用法及代碼示例
注:本文由純淨天空篩選整理自RohitPrasad3大神的英文原創作品 ShortBuffer rewind() 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。