Java 中的 CharBuffer get() 方法
java 8programmingobject oriented programming更新于 2024/10/20 9:28:00
使用 java.nio.CharBuffer 类中的 get() 方法读取缓冲区当前位置的值，然后将其递增。此方法返回当前缓冲区位置的值。此外，如果发生下溢情况，则会抛出 BufferUnderflowException。
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('P');
buffer.put('P');
buffer.put('L');
buffer.put('E');
buffer.rewind();
System.out.println("The CharBuffer is: " + Arrays.toString(buffer.array()));
char val1 = buffer.get();
System.out.println("
The value at current position of CharBuffer is: " + val1);
char val2 = buffer.get();
System.out.println("The value at next position of CharBuffer is: " + val2);
} catch (IllegalArgumentException e) {
System.out.println("Error!!! IllegalArgumentException");
} catch (ReadOnlyBufferException e) {
System.out.println("Error!!! ReadOnlyBufferException");
} catch (BufferUnderflowException e) {
System.out.println("Error!!! BufferUnderflowException");
}
}
}
输出
The CharBuffer is: [A, P, P, L, E] The value at current position of CharBuffer is: A The value at next position of CharBuffer is: P
