mycp

内容

• 编写MyCP.java 实现类似Linux下cp XXX1 XXX2的功能，要求MyCP支持两个参数：
• java MyCP -tx XXX1.txt XXX2.bin 用来把文本文件（内容为十进制数字）转化为二进制文件
• java MyCP -xt XXX1.bin XXX2.txt 用来二进制文件把转化为文本文件（内容为十进制数字）

import java.io.*;
/**
*Created by xiang on 2018/6/10.
*/
public class MyCP {
    public static void dumpToTwo(InputStream src, OutputStream dest)
            throws IOException {
        try (InputStream input = src; OutputStream output = dest) {
            byte[] data = new byte[1];
            int length;
            while ((length = input.read(data)) != -1) {
                String str = Integer.toBinaryString((data[0]&0xFF)+0x100).substring(1);//Byte.parseByte(Integer.toBinaryString(num)); //转换为二进制文件
                data[0] = Byte.parseByte(str);
                output.write(data, 0, length);
            }
        }
    }
    public static void dumpToTen(InputStream src, OutputStream dest)
            throws IOException {
        try (InputStream input = src; OutputStream output = dest) {
            byte[] data = new byte[1];
            int length;
            while ((length = input.read(data)) != -1) {
                data[0] = Byte.parseByte(String.valueOf(data[0]),10); //转换为十进制文件
                output.write(data, 0, length);
            }
        }
    }
    public static void main(String[] args) {
        FileInputStream fis = null;
        FileOutputStream fos = null;
        try {
            fis = new FileInputStream("D:/Java/from.txt");
            fos = new FileOutputStream("D:/Java/to.txt");
            dumpToTen(fis, fos);
        }catch(Exception e) {
            System.out.println(e);
        }
    }
}

结果