zoukankan      html  css  js  c++  java
  • Binary, Octal, and Hexadecimal Conversions in Java

    Convert from Binary, Octal or Hex to Decimal using Integer.parseInt(String input, int radix)

    Use Integer.parseInt(String input, int radix) to convert from any type of number to an Integer.

    String binaryNumber = "10101";
    int decimal1 = Integer.parseInt(binaryNumber, 2);
    
    System.out.println(binaryNumber + " in Base 10 : " + decimal1);
    
    String octalNumber = "456";
    int decimal2 = Integer.parseInt(octalNumber, 8);
    
    System.out.println(octalNumber + " in Base 10 : " + decimal2);
    
    String hexNumber = "ABCD";
    int decimal3 = Integer.parseInt(hexNumber, 16);
    
    System.out.println(hexNumber + " in Base 10 : " + decimal3);
    
    Output:
    
    10101 in Base 10 : 21
    456 in Base 10 : 302
    ABCD in Base 10 : 43981
    
     

    Convert from Decimal to Binary, Octal or Hex using Integer.toString(int input, int radix)

    Use Integer.toString(int input, int radix) to convert from an Integer to any type of base number.

    Integer decimal1 = 21;
    String binaryNumber = Integer.toString(decimal1, 2);
    
    System.out.println(decimal1 + " in Base 2 : " + binaryNumber);
    
    Integer decimal2 = 302;
    String octalNumber = Integer.toString(decimal2, 8);
    
    System.out.println(decimal2 + " in Base 8 : " + octalNumber);
    
    Integer decimal3 = 43981;
    String hexNumber = Integer.toString(decimal3, 16);
    
    System.out.println(decimal2 + " in Base 16 : " + hexNumber);
    
    Output:
    
    21 in Base 2 : 10101
    302 in Base 8 : 456
    43981 in Base 16 : abcd
    
     

    Convert from Decimal to Binary, Octal or Hex using Integer.toXXXString(int)

    Integer class does provide lots of unitily methods to be consumed directly. Check out them in java doc.

    Integer decimal1 = 21;
    System.out.println(decimal1 + " in Base 2 : " + Integer.toBinaryString(decimal1));
    
    Integer decimal2 = 302;
    System.out.println(decimal2 + " in Base 8 : " + Integer.toOctalString(decimal2));
    
    Integer decimal3 = 43981;
    System.out.println(decimal3 + " in Base 16 : " + Integer.toHexString(decimal3));
    
    Output:
    
    21 in Base 2 : 10101
    302 in Base 8 : 456
    43981 in Base 16 : abcd
    
  • 相关阅读:
    基数排序
    定时任务
    线程池的创建
    SharePoint 客户端对象模型 多选查阅项赋值
    Sharepoint Rest 根据user获取UserId
    SHAREPOINT
    plupload 实例
    JS 在web页面中调用本地应用程序
    Jquery ajax上传文件到服务器
    sharepoint 人员选择控件使用
  • 原文地址:https://www.cnblogs.com/skyball/p/5467470.html
Copyright © 2011-2022 走看看