JAVA 输入输出流

package demo;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;

public class App {

	public static void main(String[] args) {
		String pathname ="C:\Users\Administrator\Desktop\888.sql";//设置文件路径
		
		File file = new File(pathname);//读取文件到内存
		
		try {
			OutputStream out =new FileOutputStream("h:\889.sql");//获得文件输出流
			
			InputStream in = new FileInputStream(file);//获得文件输入流
			
			byte[] buffer = new byte[1024];//设置写入数组大小
			int length =-1;
			
			while((length = in.read(buffer))!=-1) {//方法把读取到的数据赋值给参数
				out.write(buffer, 0, length);//以二进制写入文件到磁盘直到写入完毕
			}
			
		} catch (IOException e) {
			// TODO 自动生成的 catch 块
			e.printStackTrace();
		}

	}

}