JavaIO之Stream
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package three.day.io;
import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
public class StreamsDemo01 {
public static void main(String[] args) throws IOException
{
FileOutputStream fos = new FileOutputStream("out.txt");
fos.write(new String("Hello你好").getBytes());
fos.write(new String("Hello你好").getBytes());
//fos.close();
FileInputStream fin = new FileInputStream("out.txt");
byte[] b = new byte[100];
int len = fin.read(b);
//System.out.println(new String(b,0,b.length));
System.out.println(new String(b,0,len));
//fin.close();
BufferedOutputStream bos = new BufferedOutputStream(fos);
bos.write(new String("改变了吧").getBytes());
bos.write(new String("改变了吧").getBytes());
bos.flush();
//bos.close();
BufferedInputStream bis = new BufferedInputStream(fin);
int len2 = bis.read(b);
System.out.println(new String(b,0,len2));
DataOutputStream dos = new DataOutputStream(bos);
dos.write(new String("再次改变了吧").getBytes());
dos.write(new String("再次改变了吧").getBytes());
dos.writeByte(255);
dos.writeChar('0');
dos.writeDouble(3.14);
dos.writeInt(3);
dos.writeFloat(1.57f);
dos.writeLong((long) 1e10);
// dis.flush();
dos.close();
DataInputStream dis = new DataInputStream(bis);
int len3 = dis.read(b);
System.out.println(new String(b,0,len3));
}
}
import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
public class StreamsDemo01 {
public static void main(String[] args) throws IOException
{
FileOutputStream fos = new FileOutputStream("out.txt");
fos.write(new String("Hello你好").getBytes());
fos.write(new String("Hello你好").getBytes());
//fos.close();
FileInputStream fin = new FileInputStream("out.txt");
byte[] b = new byte[100];
int len = fin.read(b);
//System.out.println(new String(b,0,b.length));
System.out.println(new String(b,0,len));
//fin.close();
BufferedOutputStream bos = new BufferedOutputStream(fos);
bos.write(new String("改变了吧").getBytes());
bos.write(new String("改变了吧").getBytes());
bos.flush();
//bos.close();
BufferedInputStream bis = new BufferedInputStream(fin);
int len2 = bis.read(b);
System.out.println(new String(b,0,len2));
DataOutputStream dos = new DataOutputStream(bos);
dos.write(new String("再次改变了吧").getBytes());
dos.write(new String("再次改变了吧").getBytes());
dos.writeByte(255);
dos.writeChar('0');
dos.writeDouble(3.14);
dos.writeInt(3);
dos.writeFloat(1.57f);
dos.writeLong((long) 1e10);
// dis.flush();
dos.close();
DataInputStream dis = new DataInputStream(bis);
int len3 = dis.read(b);
System.out.println(new String(b,0,len3));
}
}
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