File permissions and Buffered Input Stream and Temporary file in java Pro

How to set file permissions in java

package com.java2novice.files;

import java.io.File;

public class MyFilePermissions

{

public static void main(String a[])

{

        File scriptFile = new File("/home/java2novice/test.sh");

        System.out.println("Current file permissions:");

        System.out.println("Can Execute? "+scriptFile.canExecute());

        System.out.println("Can Read? "+scriptFile.canRead());

        System.out.println("Can Write? "+scriptFile.canWrite());

        scriptFile.setExecutable(true);

        scriptFile.setReadable(true);

        scriptFile.setWritable(true);

        System.out.println("Now file permissions:");

        System.out.println("Can Execute? "+scriptFile.canExecute());

        System.out.println("Can Read? "+scriptFile.canRead());

        System.out.println("Can Write? "+scriptFile.canWrite());

    }

}

How to read a file using Buffered Input Stream

package com.java2novice.files;

import java.io.BufferedInputStream;

import java.io.DataInputStream;

import java.io.FileInputStream;

import java.io.FileNotFoundException;

import java.io.IOException;

import java.io.InputStream;

public class MyFileReadBybis

{

public static void main(String a[])

{

        InputStream is = null;

        BufferedInputStream bis = null;

        DataInputStream dis = null;

        try

      {

            is = new FileInputStream("/Users/ngootooru/sample.txt");

            bis = new BufferedInputStream(is);

            dis = new DataInputStream(bis);

            String temp = null;

            while((temp = dis.readLine()) != null)

            {

                System.out.println(temp);

            }

        }

        catch (FileNotFoundException e)

       {

            e.printStackTrace();

        }

        catch (IOException e)

       {

            e.printStackTrace();

        }

    }

}

How to create temporary file in java

package com.java2novice.files;

import java.io.File;

import java.io.IOException;

public class MyTmpFile

{

public static void main(String a[])

 {

    File tmpFile = null;

        try

        {

            tmpFile = File.createTempFile("MyTempFile", ".tmp");

            System.out.println("Created Temp File Location : " + tmpFile.getAbsolutePath());

        }

            catch (IOException e)

           {

            e.printStackTrace();

        }

    }

}

How to write or store data into temporary file in java

package com.java2novice.files;

import java.io.BufferedWriter;

import java.io.File;

import java.io.FileWriter;

import java.io.IOException;

public class MyTempFileWrite

{

public static void main(String a[])

{

      File tempFile = null;

        BufferedWriter writer = null;

        try

      {

            tempFile = File.createTempFile("MyTempFile", ".tmp");

            writer = new BufferedWriter(new FileWriter(tempFile));

            writer.write("Writing data into temp file!!!");

        }

        catch (IOException e)

        {

            e.printStackTrace();

        }

          finally

      {

            try

            {

                if(writer != null) writer.close();

            }

           catch(Exception ex){}

        }

        System.out.println("Stored data in temporary file.");

    }

}