Java-IO篇之二

1. DataOutputStream

import java.io.DataOutputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
public class DataOutputStreamTest {
    public static void main(String[] args) {
        DataOutputStream dos=null;
        try {
            dos=new DataOutputStream(new FileOutputStream("data"));
            byte b=127;
            short s=32767;
            int i=2147483647;
            long l=1000L;
            float f=23f;
            double d=36.5;
            boolean bl=false;
            char c='a';
            dos.writeByte(b);
            dos.writeShort(s);
            dos.writeInt(i);
            dos.writeLong(l);
            dos.writeFloat(f);
            dos.writeDouble(d);
            dos.writeBoolean(bl);
            dos.writeChar(c);
            dos.flush();
        } catch (FileNotFoundException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        } finally {
            if(dos!=null){
                try {
                    dos.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
        }
    }
}

2、 DataInputStream

import java.io.DataInputStream;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
public class DataInputStreamTest {
    public static void main(String[] args) {
        DataInputStream dis=null;
        try {
            dis=new DataInputStream(new FileInputStream("data"));
            byte b=dis.readByte();
            short s=dis.readShort();
            int i=dis.readInt();
            long l=dis.readLong();
            float f=dis.readFloat();
            double d=dis.readDouble();
            boolean bl=dis.readBoolean();
            char c=dis.readChar();
            System.out.println(b);
            System.out.println(s);
            System.out.println(i);
            System.out.println(l);
            System.out.println(f);
            System.out.println(d);
            System.out.println(bl);
            System.out.println(c);

        } catch (FileNotFoundException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        } finally {
            if(dis!=null){
                try {
                    dis.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
        }
    }
}

原文链接:https://blog.csdn.net/weixin_43518498/article/details/109787990