Java Integer reverseBytes(int i)用法及代码示例

Java Integer 类的 reverseBytes() 方法以数字方式返回通过反转指定整数值的 2 的补码二进制表示中的字节顺序而获得的值。

用法:

以下是 reverseBytes() 方法的声明：

public static int reverseBytes(int i)

参数：

数据类型	参数	描述	必需/可选
int	i	要反转其字节的整数值。	Required

返回值：

reverseBytes() 方法返回通过颠倒指定 int 值中的字节顺序获得的数值。

异常：

兼容版本：

Java 1.5 及以上

例子1

public class IntegerReverseBytesExample1 {
	public static void main(String[] args) {
	      int i = 202;
	      System.out.println("Number = " + i);
	      //returns the value obtained by reversing order of the bytes in the specified int value
	      System.out.println("After reversing = " + Integer.reverseBytes(i));
    }
}

输出：

Number = 202
After reversing = -905969664

例子2

import java.util.Scanner;
public class IntegerReverseBytesExample2 {
	public static void main(String[] args) {
	    System.out.print("Enter Integer Value:");
	    Scanner readInput = new Scanner(System.in);
	    int i = readInput.nextInt();
	    readInput.close();
	    System.out.println("Number = " + i);
	    // returns the integer value in binary	         
	    System.out.println("Binary Representation = " + Integer.toBinaryString(i));
	    //returns the value obtained by reversing order of the bytes in the specified int value
	    System.out.println("After reversing = " + Integer.reverseBytes(i));
    }
}

输出：

Enter Integer Value:208
Number = 208
Binary Representation = 11010000
After reversing = -805306368

例子3

public class IntegerReverseBytesExample3 {
	public static void main(String[] args) {
	      int a = 202;
	      int b = -50;
	      System.out.println("Number = " + a);	         
	      System.out.println("Binary Representation = " + Integer.toBinaryString(a));	      
	      System.out.println("After reversing = " + Integer.reverseBytes(a));
	      System.out.println("\nNumber = " + b);	         
	      System.out.println("Binary Representation = " + Integer.toBinaryString(b));	      
	      System.out.println("After reversing = " + Integer.reverseBytes(b));
    }
}

输出：

Number = 202
Binary Representation = 11001010
After reversing = -905969664

Number = -50
Binary Representation = 11111111111111111111111111001110
After reversing = -822083585

示例 4

import java.util.Scanner;
public class LongReverseBytesExample4 {
	public static void main(String[] args) {
		System.out.print("Enter Number from console:");
		Scanner sc = new Scanner(System.in);
		// assign the input to a variable
		long value = sc.nextLong();
		// get the value by reversing the order of the bytes 
		long result = Long.reverseBytes(value);
		// print the result
		System.out.println("Result:" + result);
		sc.close();
	}
}

输出：

Enter Number from console:850
Result:5909567136040222720

相关用法

注：本文由纯净天空筛选整理自 Java Integer reverseBytes (int i) Method。非经特殊声明，原始代码版权归原作者所有，本译文未经允许或授权，请勿转载或复制。