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:
    一次数据库的整理的sql语句
    网页交互及xml的一些属性对程序的影响
    google编程挑战赛Round1的前两道题
    修改Windows帐户密码,导致Sql Server 2000无法启动。
    在虚拟主机中无法实现缩放等交互
    动态控件创建的一些经验
    文章
    如何解决 SQL Server 2000 中的连接问题
    待看
    I帧,P帧,B帧简介
  • 原文地址:https://www.cnblogs.com/skyball/p/5467470.html
Copyright © 2011-2022 走看看