Monday, January 12, 2015

Java Use Get file last modified time and byte array to reader or Buffered Reader Pro



How to get file last modified time

package com.java2novice.files;
import java.io.File;
public class MyFileLastModified
{
public static void main(String a[])
{
        File file = new File("MyProp.xml");
        System.out.println(file.lastModified());
    }
 }

How to convert byte array to input stream

package com.java2novice.files;
import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.io.InputStream;
public class ByteArrToInputStream
{
public static void main(String a[])
{
        String str = "converting to input stream";
        byte[] content = str.getBytes();
        int size = content.length;
        InputStream is = null;
        byte[] b = new byte[size];
        try
      {
            is = new ByteArrayInputStream(content);
            is.read(b);
            System.out.println("Data Recovered: "+new String(b));
        }
        catch (IOException e)
        {
            e.printStackTrace();
        }
        finally
      {
            try
           {
                if(is != null) is.close();
            }
            catch (Exception ex){}
          } 
    }
}

How to convert input stream to reader or Buffered Reader

package com.java2novice.files;
import java.io.BufferedReader;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
public class MyIstoBr
{
public static void main(String a[])
{
        InputStream is = null;
        BufferedReader bfReader = null;
        try
      {
            is = new FileInputStream("C:/sample.txt");
            bfReader = new BufferedReader(new InputStreamReader(is));
            String temp = null;
            while((temp = bfReader.readLine()) != null)
           {
                System.out.println(temp);
            }
        }
        catch (FileNotFoundException e)
        {
            e.printStackTrace();
        }
         catch (IOException e)
         {
            e.printStackTrace();
        }
    }
}

How to convert byte array to reader or Buffered Reader

package com.java2novice.files;
import java.io.BufferedReader;
import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
public class MyByteArrayToReader
{
public static void main(String a[])
{
 String str = "converting to input stream"+"\n and this is second line";
        byte[] content = str.getBytes();
        InputStream is = null;
        BufferedReader bfReader = null;
        try
      {
            is = new ByteArrayInputStream(content);
            bfReader = new BufferedReader(new InputStreamReader(is));
            String temp = null;
            while((temp = bfReader.readLine()) != null)
           {
                System.out.println(temp);
            }
        }
        catch (IOException e)
        {
            e.printStackTrace();
        }
        finally  
      {
            try
           {
                if(is != null) is.close();
            }
           catch (Exception ex){}
           }
       }
}

No comments:

Post a Comment