java各进制转换

说明

自己记录一下一些关于进制转换的方法，主要是二进制、八进制、十六进制和十进制之间的转换。

代码

package com.myself.utils;

/**
 * convert a num form a base to another base, the number must be bigger then 0 and less then 2147483647
 */
public class BaseConvertTools {

    /**
     * 10 -> 2
     * @return 2
     */
    public static String DecimalToBinary(int decimal) {
        return Integer.toBinaryString(decimal);
    }

    /**
     * 10 -> 8
     * @return 2
     */
    public static String DecimalToOctal(int decimal) {
        return Integer.toOctalString(decimal);
    }

    /**
     * 10 -> 16
     * @return 2
     */
    public static String DecimalToHex(int decimal) {
        return Integer.toHexString(decimal);
    }

    /**
     * 2 -> 10
     * @return 2
     */
    public static int BinaryToDecimal(String binary) {
        try {
            return Integer.parseInt(binary, 2);
        } catch (NumberFormatException e) {
            return 0;
        }
    }

    /**
     * 8 -> 10
     * @return 2
     */
    public static int OctalToDecimal(String octal) {
        try {
            return Integer.parseInt(octal, 8);
        } catch (NumberFormatException e) {
            return 0;
        }
    }

    /**
     * 16 -> 10
     * @return 2
     */
    public static int HexToDecimal(String hex) {
        try {
            return Integer.parseInt(hex, 16);
        } catch (NumberFormatException e) {
            try {
                return Integer.parseInt(hex.substring(2), 16);
            } catch (NumberFormatException ex) {
                return 0;
            }
        }
    }
}