Java : Changing a binary number bits 0's to 1' s and 1's to 0' s

Question

我想知道如何更改二进制数并反转 1 和 0？我已经知道如何将整数转换为二进制数了

Example 1: 5 as a parameter would return 2
Steps: 5 as a binary is 101
          The complement is 010
          010 as an integer is 2

将整数转换为二进制数的代码

import java.io.*;
public class DecimalToBinary{
  public static void main(String args[]) throws IOException{
  BufferedReader bf = new BufferedReader(new InputStreamReader(System.in));
  System.out.print("Enter the decimal value:");
  String hex = bf.readLine();

  int i = Integer.parseInt(hex);  


  String bynumber = Integer.toBinaryString(i);


  System.out.println("Binary: " + bynumber);
  }
} 

如果有哪位代码请帮忙，谢谢!

Answer 1

您不需要明确地将其转换为二进制。您可以使用 bitwise operators为此。