Java 中的 CharBuffer compact() 方法
java 8programmingobject oriented programming更新于 2024/10/20 4:18:00
可以使用 java.nio.CharBuffer 类中的 compact() 方法压缩缓冲区。此方法不需要参数，它返回新的压缩 CharBuffer，其内容与原始缓冲区相同。如果缓冲区是只读的，则会抛出 ReadOnlyBufferException。
下面给出了一个演示此操作的程序 −
示例
import java.nio.*;
import java.util.*;
public class Demo {
public static void main(String[] args) {
int n = 5;
try {
CharBuffer buffer = CharBuffer.allocate(n);
buffer.put('A');
buffer.put('B');
buffer.put('C');
System.out.println("The Original CharBuffer is: " + Arrays.toString(buffer.array()));
System.out.println("The position is: " + buffer.position());
System.out.println("The limit is: " + buffer.limit());
CharBuffer bufferCompact = buffer.compact();
System.out.println("
The Compacted CharBuffer is: " + Arrays.toString(bufferCompact.array()));
System.out.println("The position is: " + bufferCompact.position());
System.out.println("The limit is: " + bufferCompact.limit());
} catch (IllegalArgumentException e) {
System.out.println("Error!!! IllegalArgumentException");
} catch (ReadOnlyBufferException e) {
System.out.println("Error!!! ReadOnlyBufferException");
}
}
}
输出
The Original CharBuffer is: [A, B, C, , ] The position is: 3 The limit is: 5 The Compacted CharBuffer is: [, , C, , ] The position is: 2 The limit is: 5
