CharBuffer compareTo() 方法在 Java 中
使用 java.nio.CharBuffer 類的 compareTo() 方法可以將緩衝區與另一個緩衝區進行比較。如果此緩衝區小於給定緩衝區,則此方法返回負整數;如果此緩衝區等於給定緩衝區,則返回零;如果此緩衝區大於給定緩衝區,則返回正整數。
展示此操作的程式如下所示 -
示例
import java.nio.*;
import java.util.*;
public class Demo {
public static void main(String[] args) {
int n = 5;
try {
CharBuffer buffer1 = CharBuffer.allocate(n);
buffer1.put('A');
buffer1.put('P');
buffer1.put('P');
buffer1.put('L');
buffer1.put('E');
buffer1.rewind();
System.out.println("The first CharBuffer is: " + Arrays.toString(buffer1.array()));
CharBuffer buffer2 = CharBuffer.allocate(n);
buffer2.put('A');
buffer2.put('P');
buffer2.put('P');
buffer2.put('L');
buffer2.put('E');
buffer2.rewind();
System.out.println("The second CharBuffer is: " + Arrays.toString(buffer2.array()));
int val = buffer1.compareTo(buffer2);
if (val == 0)
System.out.println("
Both the buffers are lexicographically equal");
else if (val > 0)
System.out.println("
The first buffer is lexicographically greater than the second buffer");
else
System.out.println("
The second buffer is lexicographically greater than the first buffer");
} catch (IllegalArgumentException e) {
System.out.println("Error!!! IllegalArgumentException");
} catch (ReadOnlyBufferException e) {
System.out.println("Error!!! ReadOnlyBufferException");
}
}
}輸出
The first CharBuffer is: [A, P, P, L, E] The second CharBuffer is: [A, P, P, L, E] Both the buffers are lexicographically equal
廣告
資料結構
網路
RDBMS
作業系統
Java
iOS
HTML
CSS
Android
Python
C 程式設計
C++
C#
MongoDB
MySQL
Javascript
PHP