hexadecimal a decimal octal a decimal java

package com.zalk.cn.engTool;

/**
 * @author 进制转换
 *
 */
public class cons {
    
    
	
	@SuppressWarnings("unused")
	private long hexTodec(int[] serial) {
    
    
		// TODO 十六进制转换十进制
		long result = 0;
		for(int i=(serial.length-1);i>=0;i--) {
    
    //从高位到低位
			long iserial = serial[i]&0xff;//按位与
			long k = iserial<<((3-i)*8);//根据位置进行进位
			result+= k;
		}
		return result;
	}
	
	@SuppressWarnings("unused")
	private long octTodec(int[] serial) {
    
    
		// TODO 八进制转换十进制
		long result = 0;
		
		for(int i=(serial.length-1);i>=0;i--) {
    
    //从高位到低位
			long iserial = serial[i]&(077);
			long k = iserial<<((3-i)*6);
			result+= k;
		}
		return result;
	}
	public static void main(String[] args) {
    
    
		int[] serialH = {
    
     0xE9, 0xA2,  0xE4,  0xF3};
		int[] serialO = {
    
     035, 052,  026,  045};
//		System.out.println(0xE9A2E4F3&0xffffffff);
		System.out.println(new cons().hexTodec(serialH ));
		System.out.println(new cons().octTodec(serialO));
	}
}