文件IO流基本操作

• java文件IO流基本操作

 package PackageOfJava01;

import java.io.ByteArrayInputStream;
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;
import java.util.Locale.Category;

import javax.swing.text.html.HTMLDocument.HTMLReader.IsindexAction;

public class PracticeOfStream {

    public static void main(String[] args) {
        File myFiles=new File("myTest.txt");
        OutputStream is=null;
        String myString="niit.ruanjian.zhuzhile";
        try {
            is=new FileOutputStream(myFiles,true);
            byte[] datas =myString.getBytes();
            is.write(datas,0,datas.length);
        } catch (FileNotFoundException e) {
            e.printStackTrace();
        }catch(IOException e)
     {
            e.getMessage();
    }
}

}

package PackageOfJava01;

import java.io.ByteArrayInputStream;
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;
import java.util.Locale.Category;

import javax.swing.text.html.HTMLDocument.HTMLReader.IsindexAction;

public class PracticeOfStream {

    public static void main(String[] args) {

        File myFiles=new File("myTest.txt");
        try {
        InputStream in=new FileInputStream(myFiles);
            byte[] car=new byte[3];
            int len=-1;
            while((len=in.read(car))!=-1)
            {
                String str= new String(car, 0, len);
                System.out.println(str);
            }

        } catch (FileNotFoundException e) {
            e.printStackTrace();
        }catch(IOException e)
        {
            e.printStackTrace();
        }

}



}