java基础-输入输出流-大文本文件读取及写入另一文本-----（此程序print部分有bug，输出不正常，原因琢磨不清了。。。）

import java.io.FileInputStream;
import java.io.FileOutputStream;

/**
 * @author czchina
 *
 */
public class TestStream {
    public static void main(String[] args) {
        
        FileInputStream fls = null;
        FileOutputStream fos =null;
        
        try{
            fls = new FileInputStream("E:/Android/AndroidStudioProjects/text.txt");
            fos = new FileOutputStream("E:/Android/AndroidStudioProjects/store.txt");
            //生成一个字节数组
            byte [] buffer= new byte [500];
            
            int num = 0;
            int tmp = 0;
            int tmp1 = 0;
            for(int i=0;i<3;i++){
                tmp = fls.read(buffer,0,buffer.length);
                if(-1 == tmp){
                    System.out.print("Read complete ! \n");
                    
                    break;
                }
                
                //打印buffer
                String bufferToString = new String(buffer);
                bufferToString = bufferToString.trim();
                System.out.println("Print bufferToString：\n"+bufferToString+"\n");
                
                tmp1 = tmp;
                if(500 == tmp1){
                    num++;
                    tmp1 = 0;
                }
                fos.write(buffer,0,tmp);
            }
            //流的字节数
            num = num*500+tmp1;
            System.out.println("num: "+num);
            
        }
        catch(Exception e){
            System.out.println(e.toString());
        }
    }
}