java.nio.FloatBuffer類的slice()方法用於創建一個新的浮點緩衝區,其內容是給定緩衝區內容的共享子序列。
新緩衝區的內容將從該緩衝區的當前位置開始。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。
新緩衝區的位置將為零,其容量和限製將為該緩衝區中剩餘的浮點數,並且其標記將不確定。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 FloatBuffer slice()
返回值:此方法返回新的浮點緩衝區。
下麵是說明slice()方法的示例:
範例1:
// Java program to demonstrate
// slice() method
import java.nio.*;
import java.util.*;
public class GFG {
public static void main(String[] args)
{
// Declaring the capacity of the FloatBuffer
int capacity = 10;
// Creating the FloatBuffer
try {
// creating object of floatbuffer
// and allocating size capacity
FloatBuffer fb1 = FloatBuffer.allocate(capacity);
// putting the value in floatbuffer
fb1.put(8.56F);
fb1.put(9.61F);
// print the FloatBuffer
System.out.println("Original FloatBuffer: "
+ Arrays.toString(fb1.array()));
// print the FloatBuffer position
System.out.println("\nposition: " + fb1.position());
// print the FloatBuffer capacity
System.out.println("\ncapacity: " + fb1.capacity());
// Creating a shared subsequance buffer of given FloatBuffer
// using slice() method
FloatBuffer fb2 = fb1.slice();
// print the shared subsequance buffer
System.out.println("\nshared subsequance FloatBuffer: "
+ Arrays.toString(fb2.array()));
// print the FloatBuffer position
System.out.println("\nposition: " + fb2.position());
// print the FloatBuffer capacity
System.out.println("\ncapacity: " + fb2.capacity());
}
catch (IllegalArgumentException e) {
System.out.println("IllegalArgumentException catched");
}
catch (ReadOnlyBufferException e) {
System.out.println("ReadOnlyBufferException catched");
}
}
}
輸出:
Original FloatBuffer: [8.56, 9.61, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0] position: 2 capacity: 10 shared subsequance FloatBuffer: [8.56, 9.61, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0] position: 0 capacity: 8
範例2:
// Java program to demonstrate
// slice() method
import java.nio.*;
import java.util.*;
public class GFG {
public static void main(String[] args)
{
// Declaring the capacity of the FloatBuffer
int capacity = 10;
// Creating the FloatBuffer
try {
// creating object of floatbuffer
// and allocating size capacity
FloatBuffer fb1 = FloatBuffer.allocate(capacity);
// putting the value in floatbuffer
fb1.put(8.56F);
fb1.put(9.61F);
fb1.put(0.56F);
fb1.put(3.61F);
// print the FloatBuffer
System.out.println("Original FloatBuffer: "
+ Arrays.toString(fb1.array()));
// print the FloatBuffer position
System.out.println("\nposition: " + fb1.position());
// print the FloatBuffer capacity
System.out.println("\ncapacity: " + fb1.capacity());
// Creating a shared subsequance buffer of given FloatBuffer
// using slice() method
FloatBuffer fb2 = fb1.slice();
fb2.put(2.34F);
fb2.put(6.34F);
// print the shared subsequance buffer
System.out.println("\nshared subsequance FloatBuffer: "
+ Arrays.toString(fb2.array()));
// print the FloatBuffer position
System.out.println("\nposition: " + fb2.position());
// print the FloatBuffer capacity
System.out.println("\ncapacity: " + fb2.capacity());
}
catch (IllegalArgumentException e) {
System.out.println("IllegalArgumentException catched");
}
catch (ReadOnlyBufferException e) {
System.out.println("ReadOnlyBufferException catched");
}
}
}
輸出:
Original FloatBuffer: [8.56, 9.61, 0.56, 3.61, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0] position: 4 capacity: 10 shared subsequance FloatBuffer: [8.56, 9.61, 0.56, 3.61, 2.34, 6.34, 0.0, 0.0, 0.0, 0.0] position: 2 capacity: 6
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注:本文由純淨天空篩選整理自RohitPrasad3大神的英文原創作品 FloatBuffer slice() 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。