DataInputStream和DataOutputStream

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import java.io.BufferedInputStream;import java.io.BufferedOutputStream;import java.io.ByteArrayInputStream;import java.io.ByteArrayOutputStream;import java.io.DataInputStream;import java.io.DataOutputStream;import java.io.FileInputStream;import java.io.FileOutputStream;import java.io.IOException;public class DataStream {    public static void main(String[] args) throws IOException {//        write("test5.txt");//        read("test5.txt");        readFromBuffer(writeToBuffer());    }        //write to local file    public static void write(String path) throws IOException{        DataOutputStream out = new DataOutputStream(new BufferedOutputStream(new FileOutputStream(path)));        out.writeInt(1);        out.writeShort(2);        out.writeLong(1);        out.writeUTF("Some text");        out.flush();        out.close();    }        //read from local file    public static void read(String path) throws IOException{        DataInputStream in = new DataInputStream(new BufferedInputStream(new FileInputStream(path)));                System.out.println(in.readInt());        System.out.println(in.readShort());        System.out.println(in.readLong());        System.out.println(in.readUTF());        in.close();    }        //write to byte array    public static byte[] writeToBuffer() throws IOException{        byte[] buff = null;        ByteArrayOutputStream bos = new ByteArrayOutputStream();        DataOutputStream out = new DataOutputStream(new BufferedOutputStream(bos));        out.writeInt(1);        out.writeShort(2);        out.writeLong(1);        out.writeUTF("Some text");        out.flush();        out.close();        buff = bos.toByteArray();        bos.close();        return buff;    }        //read from byte array    public static void readFromBuffer(byte[] b) throws IOException{        DataInputStream in = new DataInputStream(new BufferedInputStream(new ByteArrayInputStream(b)));                System.out.println(in.readInt());        System.out.println(in.readShort());        System.out.println(in.readLong());        System.out.println(in.readUTF());        in.close();    }    }

 

DataInputStream和DataOutputStream