Java Integer reverseBytes 方法

2025 年 3 月 25 日 | 阅读 2 分钟

Java Integer 类的 reverseBytes() 方法会根据指定的整数值的二进制补码表示来反转字节顺序，并返回所得的数值。

语法

以下是 reverseBytes() 方法的声明：

参数

数据类型	参数	描述	必需/可选
int	i	需要反转字节的整数值。	必需

返回值

reverseBytes() 方法返回通过反转指定 int 值中的字节顺序而获得的数值。

异常

不适用

兼容版本

Java 1.5 及以上版本

示例 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

示例 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

示例 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

下一个主题Java-integer-reverse-method

Java Integer reverseBytes 方法

语法

参数

返回值

异常

兼容版本

示例 1

示例 2

示例 3

示例 4

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Java Integer reverseBytes 方法

语法

参数

返回值

异常

兼容版本

示例 1

示例 2

示例 3

示例 4

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