Java 中的 ShortBuffer compareTo 方法示例
原文:https://www . geesforgeks . org/short buffer-compare to-method-in-Java-with-examples/
java.nio.ShortBuffer 类的 compareTo() 方法用于比较一个缓冲区和另一个缓冲区。
两个短缓冲区通过字典式比较它们的剩余元素序列来进行比较，而不考虑每个序列在其相应缓冲区内的起始位置。对短元素进行比较，就像调用 Short.compare(短，短)一样。短缓冲区无法与任何其他类型的对象相比。
语法:
public int compareTo(ShortBuffer that)
参数:该方法以一个短缓冲区对象作为参数，与该缓冲区进行比较。
返回值:该方法返回一个负整数、零或一个正整数，因为该缓冲区小于、等于或大于给定缓冲区的。
以下是举例说明 compareTo() 方法的例子:
程序 1 :当两个浮动缓冲器相等时。
// Java program to demonstrate
// compareTo() method
import java.nio.*;
import java.util.*;
public class GFG {
public static void main(String[] args)
{
// Declaring the capacity of the sb
int capacity1 = 3;
// Creating the ShortBuffer
try {
// creating object of shortbuffer sb
// and allocating size capacity
ShortBuffer sb = ShortBuffer.allocate(capacity1);
// putting the value in sb
sb.put((short)956);
sb.put((short)761);
sb.put((short)461);
// revind the short buffer
sb.rewind();
// print the ShortBuffer
System.out.println(" ShortBuffer sb: "
+ Arrays.toString(sb.array()));
// creating object of shortbuffer sb1
// and allocating size capacity
ShortBuffer sb1 = ShortBuffer.allocate(capacity1);
// putting the value in sb1
sb1.put((short)956);
sb1.put((short)761);
sb1.put((short)461);
// revind the short buffer
sb1.rewind();
// print the shortBuffer
System.out.println(" ShortBuffer sb1: "
+ Arrays.toString(sb1.array()));
// compare both buffer and store the value into integer
int i = sb.compareTo(sb1);
// if else condition
if (i == 0)
System.out.println("\nboth buffer are lexicographically equal ");
else if (i >= 0)
System.out.println("\nfb is lexicographically greater than fb1 ");
else
System.out.println("\nfb is lexicographically less than fb1 ");
}
catch (IllegalArgumentException e) {
System.out.println(" Exception throws: "
+ e);
}
catch (ReadOnlyBufferException e) {
System.out.println(" Exception throws: "
+ e);
}
}
}
Output:
ShortBuffer sb: [956, 761, 461]
ShortBuffer sb1: [956, 761, 461]
both buffer are lexicographically equal
程序 2 :当这个短缓冲区大于传递的短缓冲区时
// Java program to demonstrate
// compareTo() method
import java.nio.*;
import java.util.*;
public class GFG {
public static void main(String[] args)
{
// Declaring the capacity of the sb
int capacity1 = 3;
// Creating the ShortBuffer
try {
// creating object of shortbuffer sb
// and allocating size capacity
ShortBuffer sb = ShortBuffer.allocate(capacity1);
// putting the value in sb
sb.put((short)956);
sb.put((short)761);
sb.put((short)41);
// revind the short buffer
sb.rewind();
// print the ShortBuffer
System.out.println(" ShortBuffer s: "
+ Arrays.toString(sb.array()));
// creating object of shortbuffer sb1
// and allocating size capacity
ShortBuffer sb1 = ShortBuffer.allocate(capacity1);
// putting the value in sb1
sb1.put((short)856);
sb1.put((short)761);
sb1.put((short)461);
// revind the short buffer
sb1.rewind();
// print the ShortBuffer
System.out.println(" ShortBuffer sb1: "
+ Arrays.toString(sb1.array()));
// compare both buffer and store the value into integer
int i = sb.compareTo(sb1);
// if else condition
if (i == 0)
System.out.println("\nboth buffer are lexicographically equal ");
else if (i >= 0)
System.out.println("\nfb is lexicographically greater than fb1 ");
else
System.out.println("\nfb is lexicographically less than fb1 ");
}
catch (IllegalArgumentException e) {
System.out.println(" Exception throws: "
+ e);
}
catch (ReadOnlyBufferException e) {
System.out.println(" Exception throws: "
+ e);
}
}
}
Output:
ShortBuffer s: [956, 761, 41]
ShortBuffer sb1: [856, 761, 461]
fb is lexicographically greater than fb1
程序 3 :当这个短缓存小于传递的短缓存时
// Java program to demonstrate
// compareTo() method
import java.nio.*;
import java.util.*;
public class GFG {
public static void main(String[] args)
{
// Declaring the capacity of the sb
int capacity1 = 3;
// Creating the ShortBuffer
try {
// creating object of shortbuffer sb
// and allocating size capacity
ShortBuffer sb = ShortBuffer.allocate(capacity1);
// putting the value in sb
sb.put((short)856);
sb.put((short)761);
sb.put((short)461);
// revind the short buffer
sb.rewind();
// print the ShortBuffer
System.out.println(" ShortBuffer sb: "
+ Arrays.toString(sb.array()));
// creating object of shortbuffer sb1
// and allocating size capacity
ShortBuffer sb1 = ShortBuffer.allocate(capacity1);
// putting the value in sb1
sb1.put((short)956);
sb1.put((short)761);
sb1.put((short)461);
// revind the short buffer
sb1.rewind();
// print the ShortBuffer
System.out.println(" ShortBuffer sb1: "
+ Arrays.toString(sb1.array()));
// compare both buffer and store the value into integer
int i = sb.compareTo(sb1);
// if else condition
if (i == 0)
System.out.println("\nboth buffer are lexicographically equal ");
else if (i >= 0)
System.out.println("\nfb is lexicographically greater than fb1 ");
else
System.out.println("\nfb is lexicographically less than fb1 ");
}
catch (IllegalArgumentException e) {
System.out.println(" Exception throws: "
+ e);
}
catch (ReadOnlyBufferException e) {
System.out.println(" Exception throws: "
+ e);
}
}
}
Output:
ShortBuffer sb: [856, 761, 461]
ShortBuffer sb1: [956, 761, 461]
fb is lexicographically less than fb1
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