BufferedOutputStream与BufferedInputStream
outputStream与InputStream
FileOutputStream与FileInputStream
写出数据
import java.io.File;
import java.io.FileOutputStream;
import java.io.ObjectOutputStream;
import java.util.List;
import java.util.ArrayList;
public class TestWrite{
//节点流 可以直接连接文件的流
//过滤器流 =>节点流=>文件
public static void main(String []args)
throws Exception{
//创建文件
File f=new File("d:/my.data");
//节点流
FileOutputStream out=new FileOutputStream(f);
//对象流（过滤器流）
ObjectOutputStream objout=new ObjectOutputStream(out);
//创建个集合
List<String> list=new ArrayList<>();
list.add("hello");
list.add("hello1");
list.add("hello2");
//写出去
objout.writeObject(list);
//关闭了
objout.close();
}
}
读入数据
import java.util.List;
import java.io.File;
import java.io.FileInputStream;
import java.io.ObjectInputStream;
public class TestRead{
public static void main(String []args)
throws Exception{
//创建文件File
File f=new File("d:/my.data");
//节点流读取文件FileInputStream
FileInputStream in=new FileInputStream(f);
//对象流操作节点流ObjectInputStream
ObjectInputStream oin=new ObjectInputStream(in);
//读取对象readObject()
List<String> list=(List<String>)oin.readObject();
//遍历数据for
for(String str:list){
System.out.println(str);
}
//关闭流
oin.close();
}
}