How to delete file on remote server using SFTP in java?

How to delete file on remote server using SFTP in java?
DeeKay January 5, 2017 at 2:41 am · How To, SFTP

Deleting or removing a file on remote server in java is easy using JSCH (SFTP) api. Now-a-days it is a common use case in software projects where you need to delete a file from the remote server using SFTP connection. JSch is a pure Java implementation of SSH2 (We can use SFTP Channel). JSch allows…
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How to generate pseudorandom numbers in Java ?

How to generate pseudorandom numbers in Java ?
DeeKay January 3, 2017 at 8:45 pm · How To, java.math, java.util, Other

In this post we will see how to generate pseudorandom numbers in Java. Before that we will see what is Random numbers. Random numbers are the numbers that occur in sequence such that the values are uniformly distributed over a defined interval or set, which is impossible to predict future values based on present and…
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Java Program For Uploading Folder Content recursively from local to SFTP Server

Java Program For Uploading Folder Content recursively from local to SFTP Server
DeeKay December 29, 2016 at 3:55 am · How To, SFTP

Java program for uploading the content of a local machine directory or folder to SFTP server is not straight forward. If we use JSCH API for SFTP upload then you cannot use channelSftp.put(new FileInputStream(sourceFile), sourceFile.getName(), ChannelSftp.OVERWRITE); method. This channelSftp.put() method will work for single file upload but you cannot use it for folder upload. Below Java…
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Working with Log4J Basics – A Log4J Tutorial

Working with Log4J Basics – A Log4J Tutorial
DeeKay December 28, 2016 at 9:08 pm · APIs, Tutorial

Introduction Here is your Basic Log4J tutorial helps you to setup Log4J in your application. Log statements placed in your code will work as a high level debugging mechanism for your application. Here I’m saying the logging mechanism as high level debugging mechanism, as low level debug mechanism is debugging the code step-by-step using IDE…
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Java Program For Downloading Folder Content recursively from SFTP Server

Java Program For Downloading Folder Content recursively from SFTP Server
DeeKay December 28, 2016 at 4:56 am · How To, SFTP

How to download folder from SFTP Server (Secure File Transfer Protocol) is the common use case for Java developer who wants to download folder from SFTP. To write a java program to download from SFTP, you will need to download JSCH jar file. For other SFTP operations in java, please refer below posts on Kodehelp.com –…
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Java 8 – How to find Date on the day of given Week in a month ?

Java 8 – How to find Date on the day of given Week in a month ?
DeeKay December 6, 2016 at 9:17 pm · java.time

In this Java 8 program we will see how to find date on the day of given week in a month. For example if we want to find the date on 3rd Wednesday of current month.  


What is the difference between HashTable and HashMap in Java?

What is the difference between HashTable and HashMap in Java?
DeeKay December 2, 2016 at 3:12 am · java.util

Both HashTable and HashMap are java collections and implements java.util.Map interface. Difference between HashTable and HashMap is the most common interview question. Many of the candidates who face the interview struggle to answer this question. Difference between HashTable and HashMap in Java Thread Safe: HashTable is thread-safe and can be shared between multiple threads but…
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How to Sort a Map by key in Java?

How to Sort a Map by key in Java?
DeeKay November 20, 2016 at 2:00 am · java.util, sorting

Here we will see how to sort a Map by key in java. There are two ways to sort a Map by Key –   First Approach Second Approach


How to make SFTP or SSH connection using public key authentication in java?

How to make SFTP or SSH connection using public key authentication in java?
DeeKay May 11, 2015 at 7:32 pm · How To, SFTP

Using SFTP or SSH public key authentication to make the connection to remote system is more secure and robust method than login with account password. SSH public key authentication is an authentication method that relies on asymmetric cryptographic algorithms that generate a pair of  separate keys, one private and the other public. Private Key is the secret key…
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How To Setup SSH Public Key Authentication To Connect Remote System ?

How To Setup SSH Public Key Authentication To Connect Remote System ?
DeeKay April 29, 2015 at 3:22 am · How To, SFTP

Overview Nowadays passwords are not much secured. If you pick a strongest password including all upper case, lower case alphabet and numbers with special characters, the password is still susceptible to the brute-force attack. It’s a human nature to use a same password for different remote hosts which can put you at more risk of a…
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