자바 중 2,8,10,16 진법 간 의 전환

더 읽 기
자바 중 2,8,10,16 진법 간 의 전환

package com.jynine.main;
/**
 *  、 、  、         
 * @author Administrator
 *
 */
public class FeelTheBaseUtil {
	/**
	 *           
	 * @param s
	 * @return
	 */
	public static Integer hexToDecimal(String s){
		return Integer.valueOf(s, 16);
	}
	/**
	 *           
	 * @param s
	 * @return
	 */
	public static String hexToOctal(String s){
		return Integer.toOctalString(Integer.valueOf(s, 16));
	}
	/**
	 *           
	 * @param s
	 * @return
	 */
	public static String hexToBinary(String s){
		return Integer.toBinaryString(Integer.valueOf(s, 16));				
	}
	/**
	 *           
	 * @param n
	 * @return
	 */
	public static String decimalToHex(int n){
		return Integer.toHexString(n);
	}
	/**
	 *          
	 * @param n
	 * @return
	 */
	public static String decimalToOctal(int n){
		return Integer.toOctalString(n);
	}
	/**
	 *          
	 * @param n
	 * @return
	 */
	public static String decimalToBinary(int n){
		return Integer.toBinaryString(n);
	}
	/**
	 *           
	 * @param s
	 * @return
	 */
	public static String octalToHex(String s){
		return Integer.toHexString(Integer.valueOf(s, 8));
	}
	/**
	 *          
	 * @param s
	 * @return
	 */
	public static Integer octalToDecimal(String s){
		return Integer.valueOf(s,8);
	}
	/**
	 *          
	 * @param s
	 * @return
	 */
	public static String octalToBinary(String s){
		return Integer.toBinaryString(Integer.valueOf(s, 8));
	}
	/**
	 *           
	 * @param s
	 * @return
	 */
	public static String binaryToHex(String s){
		return Integer.toHexString(Integer.valueOf(s, 2));
	}
	/**
	 *          
	 * @param s
	 * @return
	 */
	public static Integer binaryToDecimal(String s){
		return Integer.valueOf(s, 2);
	}
	/**
	 *          
	 * @param s
	 * @return
	 */
	public static String binaryToOctal(String s){
		return Integer.toOctalString(Integer.valueOf(s, 2));
	}
	public static void main(String[] args) {
		String s = "0xff";
		int n1 = 0xff;
		s = String.valueOf(n1);
		int n = 20;
		String s1 = "0341";
		String s2 = "01000100";
		System.out.println("16   ："+s);
		System.out.println("16->10 : "+hexToDecimal(s));
		System.out.println("16->8 : "+hexToOctal(s));
		System.out.println("16->2 : "+hexToBinary(s));
		System.out.println("10   ："+n);
		System.out.println("10->16 : "+decimalToHex(n));
		System.out.println("10->8 : "+decimalToOctal(n));
		System.out.println("10->2 : "+decimalToBinary(n));
		System.out.println("8   ："+s1);
		System.out.println("8->16 : "+octalToHex(s1));
		System.out.println("8->10 : "+octalToDecimal(s1));
		System.out.println("8->2 : "+octalToBinary(s1));
		System.out.println("2   ："+s2);
		System.out.println("2->16 : "+binaryToHex(s2));
		System.out.println("2->10 : "+binaryToDecimal(s2));
		System.out.println("2->8 : "+binaryToOctal(s2));
	}
}