Java ShortBuffer compareTo方法及示例

java.nio.ShortBuffer 类的 compareTo() 方法是用来比较一个缓冲区和另一个缓冲区。两个短缓冲区通过比较它们的剩余元素序列进行比较，不考虑每个序列在其相应缓冲区中的起始位置。一对短元素的比较是通过调用Short.compare(short, short)来实现的。短缓冲区不能与任何其他类型的对象相比较。
语法:

public int compareTo(ShortBuffer that)

参数 ：该方法接收一个 shortbuffer 对象作为参数，该缓冲区将与之进行比较。
返回值 ：该方法在该缓冲区 小于、等于或大于给定的缓冲区时返回一个 负整数、零或正整数 。下面是说明 compareTo() 方法的例子：
程序1 ：当两个FloatBuffer都相等时。

// 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);             // rewind 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);             // rewind 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);        }    }}

输出

ShortBuffer sb: [956, 761, 461]ShortBuffer sb1: [956, 761, 461]both buffer are lexicographically equal

程序2 ：当这个ShortBuffer大于传递的ShortBuffer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);             // rewind 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);             // rewind 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);        }    }}

输出

ShortBuffer s: [956, 761, 41]ShortBuffer sb1: [856, 761, 461]fb is lexicographically greater than fb1

程序3 ：当这个ShortBuffer小于传递的ShortBuffer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);             // rewind 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);             // rewind 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);        }    }}

输出

ShortBuffer sb: [856, 761, 461]ShortBuffer sb1: [956, 761, 461]fb is lexicographically less than fb1