Data Structure
Networking
RDBMS
Operating System
Java
MS Excel
iOS
HTML
CSS
Android
Python
C Programming
C++
C#
MongoDB
MySQL
Javascript
PHP
Physics
Chemistry
Biology
Mathematics
English
Economics
Psychology
Social Studies
Fashion Studies
Legal StudiesJava 中 DoubleBuffer 的 slice() 方法
在 java.nio.DoubleBuffer 類中可以使用方法 slice() 建立一個新 DoubleBuffer，其內容是原始 DoubleBuffer 的共享子序列。如果原始緩衝是隻讀的，則此方法返回新 DoubleBuffer，該 DoubleBuffer 是隻讀的；如果原始緩衝是直接的，則返回的 DoubleBuffer 是直接的。
演示這一點的程式如下 −
示例
import java.nio.*;
import java.util.*;
public class Demo {
public static void main(String[] args) {
int n = 5;
try {
DoubleBuffer buffer1 = DoubleBuffer.allocate(n);
buffer1.put(4.5D);
buffer1.put(1.2D);
buffer1.put(3.9D);
System.out.println("The Original DoubleBuffer is: " + Arrays.toString(buffer1.array()));
System.out.println("The position is: " + buffer1.position());
System.out.println("The capacity is: " + buffer1.capacity());
DoubleBuffer buffer2 = buffer1.slice();
System.out.println("
The Subsequence DoubleBuffer is: " + Arrays.toString(buffer2.array()));
System.out.println("The position is: " + buffer2.position());
System.out.println("The capacity is: " + buffer2.capacity());
} catch (IllegalArgumentException e) {
System.out.println("Error!!! IllegalArgumentException");
} catch (ReadOnlyBufferException e) {
System.out.println("Error!!! ReadOnlyBufferException");
}
}
}上述程式的輸出如下 −
輸出
The Original DoubleBuffer is: [4.5, 1.2, 3.9, 0.0, 0.0] The position is: 3 The capacity is: 5 The Subsequence DoubleBuffer is: [4.5, 1.2, 3.9, 0.0, 0.0] The position is: 0 The capacity is: 2
更新於: 2019 年 7 月 30 日
92 次瀏覽
廣告