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时尚研究
法律研究CharBuffer compareTo() 方法在 Java 中
使用 java.nio.CharBuffer 类的 compareTo() 方法可以将缓冲区与另一个缓冲区进行比较。如果此缓冲区小于给定缓冲区，则此方法返回负整数；如果此缓冲区等于给定缓冲区，则返回零；如果此缓冲区大于给定缓冲区，则返回正整数。
展示此操作的程序如下所示 -
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");
}
}
}输出
The first CharBuffer is: [A, P, P, L, E] The second CharBuffer is: [A, P, P, L, E] Both the buffers are lexicographically equal
更新于： 2019 年 7 月 30 日
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